# 少年法 / Juveniles Act — 第十七条 (Article 17) This is the Markdown twin of https://japanlaw.org/ja/juvenile-act/art-17. Every law, and how to address a provision: https://japanlaw.org/llms.txt. The same laws as MCP tools (no sign-in): https://japanlaw.org/mcp. - Law: 少年法 (Juveniles Act), 昭和二十三年法律第百六十八号 - English title "Juveniles Act": Ministry of Justice translation - Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say. - Provision: 第十七条 (Article 17)（観護の措置） — address `art-17` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/ja/juvenile-act/art-17 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/323AC0000000168/art-17 - Every provision below carries its address and both URLs on the line under it. - Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below. Only the Japanese as published by the government has legal effect; the text below is a copy of it. Every English rendering below is a translation and says which kind: the Ministry of Justice's translation, or this site's machine translation, whose model and date the Sources list names. They are never merged and never substituted for one another. --- ### 第十七条（観護の措置） — (Measure for Observation and Protection) caption: Ministry of Justice translation — Japanese Law Translation Database System art-17 · https://japanlaw.org/ja/juvenile-act/art-17 · https://japanlaw.org/l/323AC0000000168/art-17 **第一項** 家庭裁判所は、審判を行うため必要があるときは、決定をもつて、次に掲げる観護の措置をとることができる。 art-17/par-1 · https://japanlaw.org/ja/juvenile-act/art-17/par-1 · https://japanlaw.org/l/323AC0000000168/art-17/par-1 A family court may implement measures for observation and protection listed in the following items by a ruling if the measures are needed for its trial and decision: Ministry of Justice translation — Japanese Law Translation Database System **一** 家庭裁判所調査官の観護に付すること。 art-17/par-1/item-1 · https://japanlaw.org/ja/juvenile-act/art-17/par-1/item-1 · https://japanlaw.org/l/323AC0000000168/art-17/par-1/item-1 to put under the observation and protection of a family court investigating officer; Ministry of Justice translation — Japanese Law Translation Database System **二** 少年鑑別所に送致すること。 art-17/par-1/item-2 · https://japanlaw.org/ja/juvenile-act/art-17/par-1/item-2 · https://japanlaw.org/l/323AC0000000168/art-17/par-1/item-2 to refer to a juvenile classification home. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 同行された少年については、観護の措置は、遅くとも、到着のときから二十四時間以内に、これを行わなければならない。検察官又は司法警察員から勾留又は逮捕された少年の送致を受けたときも、同様である。 art-17/par-2 · https://japanlaw.org/ja/juvenile-act/art-17/par-2 · https://japanlaw.org/l/323AC0000000168/art-17/par-2 Measures for observation and protection regarding an escorted juvenile must be implemented within 24 hours, at the latest, from the time of the arrival. This also applies to the measures regarding a juvenile who has been detained or arrested, and is referred to the court by a public prosecutor or a judicial police officer. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 第一項第二号の措置においては、少年鑑別所に収容する期間は、二週間を超えることができない。ただし、特に継続の必要があるときは、決定をもつて、これを更新することができる。 art-17/par-3 · https://japanlaw.org/ja/juvenile-act/art-17/par-3 · https://japanlaw.org/l/323AC0000000168/art-17/par-3 If the measures prescribed in item (ii) of paragraph (1) are implemented, then the period of detention of the juvenile at the juvenile classification home may not exceed two weeks; provided, however, that the period may be renewed by the court's ruling if continued custody is particularly needed. Ministry of Justice translation — Japanese Law Translation Database System **第四項** 前項ただし書の規定による更新は、一回を超えて行うことができない。ただし、第三条第一項第一号に掲げる少年に係る拘禁刑以上の刑に当たる罪の事件でその非行事実（犯行の動機、態様及び結果その他の当該犯罪に密接に関連する重要な事実を含む。以下同じ。）の認定に関し証人尋問、鑑定若しくは検証を行うことを決定したもの又はこれを行つたものについて、少年を収容しなければ審判に著しい支障が生じるおそれがあると認めるに足りる相当の理由がある場合には、その更新は、更に二回を限度として、行うことができる。 art-17/par-4 · https://japanlaw.org/ja/juvenile-act/art-17/par-4 · https://japanlaw.org/l/323AC0000000168/art-17/par-4 The renewal pursuant to the proviso of the preceding paragraph is not to take place more than once; provided, however, that the renewal may take place with a limit of up to two additional times if the family court has decided to conduct an examination of a witness, seek an expert's opinion, or conduct an inspection or has implemented these measures to find out the facts of the delinquent act (including motive for the offense, the manner and impact of the crime, or other important facts closely related to the crime; this also applies below) punishable by imprisonment or a heavier punishment, concerning a juvenile as prescribed in Article 3, paragraph (1), item (i), and if there are reasonable grounds to suspect that a family court trial and decision would be severely hindered without detaining the juvenile. machine translation, not official **第五項** 第三項ただし書の規定にかかわらず、検察官から再び送致を受けた事件が先に第一項第二号の措置がとられ、又は勾留状が発せられた事件であるときは、収容の期間は、これを更新することができない。 art-17/par-5 · https://japanlaw.org/ja/juvenile-act/art-17/par-5 · https://japanlaw.org/l/323AC0000000168/art-17/par-5 Notwithstanding the proviso of paragraph (3), the period of detention in a case once again referred by a public prosecutor may not be renewed if the measures prescribed in item (ii) of paragraph (1) have already been implemented or a detention warrant has already been issued regarding the case. Ministry of Justice translation — Japanese Law Translation Database System **第六項** 裁判官が第四十三条第一項の請求により、第一項第一号の措置をとつた場合において、事件が家庭裁判所に送致されたときは、その措置は、これを第一項第一号の措置とみなす。 art-17/par-6 · https://japanlaw.org/ja/juvenile-act/art-17/par-6 · https://japanlaw.org/l/323AC0000000168/art-17/par-6 If the judge implements the measures prescribed in paragraph (1), item (i) of this Article upon request pursuant to the provisions of Article 43, paragraph (1), the measures are deemed as those prescribed in paragraph (1), item (i) of this Article if the case is subsequently referred to a family court. Ministry of Justice translation — Japanese Law Translation Database System **第七項** 裁判官が第四十三条第一項の請求により第一項第二号の措置をとつた場合において、事件が家庭裁判所に送致されたときは、その措置は、これを第一項第二号の措置とみなす。この場合には、第三項の期間は、家庭裁判所が事件の送致を受けた日から、これを起算する。 art-17/par-7 · https://japanlaw.org/ja/juvenile-act/art-17/par-7 · https://japanlaw.org/l/323AC0000000168/art-17/par-7 If the judge implements the measures prescribed in item (ii), paragraph (1) of this Article upon request pursuant to the provisions of Article 43, paragraph (1), the measures are deemed to be those prescribed in item (ii), paragraph (1) of this Article if the case is subsequently referred to a family court. In this case, the period prescribed in paragraph (3) begins from the day when the case is referred to a family court. Ministry of Justice translation with a slip corrected by this site — not the Ministry's text; the Ministry printed: "If the judge implements the measures prescribed in item (ii), paragraph (1) of this Article upon request pursuant to the provisions of Article 43, paragraph (1), the measures are deemed to be those prescribed in item (1), paragraph (1) of this Article if the case is subsequently referred to a family court. In this case, the period prescribed in paragraph (3) begins from the day when the case is referred to a family court." — https://www.japaneselawtranslation.go.jp/en/laws/view/4827/tb **第八項** 観護の措置は、決定をもつて、これを取り消し、又は変更することができる。 art-17/par-8 · https://japanlaw.org/ja/juvenile-act/art-17/par-8 · https://japanlaw.org/l/323AC0000000168/art-17/par-8 The measures for observation and protection may be repealed or amended by a ruling. Ministry of Justice translation — Japanese Law Translation Database System **第九項** 第一項第二号の措置については、収容の期間は、通じて八週間を超えることができない。ただし、その収容の期間が通じて四週間を超えることとなる決定を行うときは、第四項ただし書に規定する事由がなければならない。 art-17/par-9 · https://japanlaw.org/ja/juvenile-act/art-17/par-9 · https://japanlaw.org/l/323AC0000000168/art-17/par-9 Regarding the measures provided in paragraph (1), item (ii), the total period of detention may not exceed eight weeks; provided, however, that no ruling that makes a total custody period longer than four weeks is to be rendered without the grounds prescribed in the proviso of paragraph (4). Ministry of Justice translation — Japanese Law Translation Database System **第十項** 裁判長は、急速を要する場合には、第一項及び第八項の処分をし、又は合議体の構成員にこれをさせることができる。 art-17/par-10 · https://japanlaw.org/ja/juvenile-act/art-17/par-10 · https://japanlaw.org/l/323AC0000000168/art-17/par-10 In case of emergency, the presiding judge may take the dispositions prescribed in paragraphs (1) or (8), or have a member of the panel of judges do this. Ministry of Justice translation with a slip corrected by this site — not the Ministry's text; the Ministry printed: "In case of emergency, the presiding judge may take the dispositions prescribed in paragraphs (1) or (8), or have a member of panel of judges do this." — https://www.japaneselawtranslation.go.jp/en/laws/view/4827/tb --- ## Cites - art-17/par-3: 第一項第二号 → 少年法 第十七条第一項第二号 (Article 17, paragraph (1), item (ii)), art-17/par-1/item-2 — https://japanlaw.org/ja/juvenile-act/art-17/par-1/item-2 · https://japanlaw.org/l/323AC0000000168/art-17/par-1/item-2 - art-17/par-4: 前項 → 少年法 第十七条第三項 (Article 17, paragraph (3)), art-17/par-3 — https://japanlaw.org/ja/juvenile-act/art-17/par-3 · https://japanlaw.org/l/323AC0000000168/art-17/par-3 - art-17/par-4: 第三条第一項第一号 → 少年法 第三条第一項第一号 (Article 3, paragraph (1), item (i)), art-3/par-1/item-1 — https://japanlaw.org/ja/juvenile-act/art-3/par-1/item-1 · https://japanlaw.org/l/323AC0000000168/art-3/par-1/item-1 - art-17/par-5: 第三項 → 少年法 第十七条第三項 (Article 17, paragraph (3)), art-17/par-3 — https://japanlaw.org/ja/juvenile-act/art-17/par-3 · https://japanlaw.org/l/323AC0000000168/art-17/par-3 - art-17/par-5: 第一項第二号 → 少年法 第十七条第一項第二号 (Article 17, paragraph (1), item (ii)), art-17/par-1/item-2 — https://japanlaw.org/ja/juvenile-act/art-17/par-1/item-2 · https://japanlaw.org/l/323AC0000000168/art-17/par-1/item-2 - art-17/par-6: 第四十三条第一項 → 少年法 第四十三条第一項 (Article 43, paragraph (1)), art-43/par-1 — https://japanlaw.org/ja/juvenile-act/art-43/par-1 · https://japanlaw.org/l/323AC0000000168/art-43/par-1 - art-17/par-6: 第一項第一号 → 少年法 第十七条第一項第一号 (Article 17, paragraph (1), item (i)), art-17/par-1/item-1 — https://japanlaw.org/ja/juvenile-act/art-17/par-1/item-1 · https://japanlaw.org/l/323AC0000000168/art-17/par-1/item-1 - art-17/par-7: 第四十三条第一項 → 少年法 第四十三条第一項 (Article 43, paragraph (1)), art-43/par-1 — https://japanlaw.org/ja/juvenile-act/art-43/par-1 · https://japanlaw.org/l/323AC0000000168/art-43/par-1 - art-17/par-7: 第一項第二号 → 少年法 第十七条第一項第二号 (Article 17, paragraph (1), item (ii)), art-17/par-1/item-2 — https://japanlaw.org/ja/juvenile-act/art-17/par-1/item-2 · https://japanlaw.org/l/323AC0000000168/art-17/par-1/item-2 - art-17/par-7: 第三項 → 少年法 第十七条第三項 (Article 17, paragraph (3)), art-17/par-3 — https://japanlaw.org/ja/juvenile-act/art-17/par-3 · https://japanlaw.org/l/323AC0000000168/art-17/par-3 - art-17/par-9: 第一項第二号 → 少年法 第十七条第一項第二号 (Article 17, paragraph (1), item (ii)), art-17/par-1/item-2 — https://japanlaw.org/ja/juvenile-act/art-17/par-1/item-2 · https://japanlaw.org/l/323AC0000000168/art-17/par-1/item-2 - art-17/par-9: 第四項 → 少年法 第十七条第四項 (Article 17, paragraph (4)), art-17/par-4 — https://japanlaw.org/ja/juvenile-act/art-17/par-4 · https://japanlaw.org/l/323AC0000000168/art-17/par-4 - art-17/par-10: 第一項 → 少年法 第十七条第一項 (Article 17, paragraph (1)), art-17/par-1 — https://japanlaw.org/ja/juvenile-act/art-17/par-1 · https://japanlaw.org/l/323AC0000000168/art-17/par-1 - art-17/par-10: 第八項 → 少年法 第十七条第八項 (Article 17, paragraph (8)), art-17/par-8 — https://japanlaw.org/ja/juvenile-act/art-17/par-8 · https://japanlaw.org/l/323AC0000000168/art-17/par-8 ## Cited by 27 provisions cite this one. No official source publishes this direction. - 少年法 第十七条第三項（観護の措置） — https://japanlaw.org/ja/juvenile-act/art-17/par-3 · https://japanlaw.org/l/323AC0000000168/art-17/par-3 - 少年法 第十七条第四項（観護の措置） — https://japanlaw.org/ja/juvenile-act/art-17/par-4 · https://japanlaw.org/l/323AC0000000168/art-17/par-4 - 少年法 第十七条第五項（観護の措置） — https://japanlaw.org/ja/juvenile-act/art-17/par-5 · https://japanlaw.org/l/323AC0000000168/art-17/par-5 - 少年法 第十七条第六項（観護の措置） — https://japanlaw.org/ja/juvenile-act/art-17/par-6 · https://japanlaw.org/l/323AC0000000168/art-17/par-6 - 少年法 第十七条第七項（観護の措置） — https://japanlaw.org/ja/juvenile-act/art-17/par-7 · https://japanlaw.org/l/323AC0000000168/art-17/par-7 - 少年法 第十七条第九項（観護の措置） — https://japanlaw.org/ja/juvenile-act/art-17/par-9 · https://japanlaw.org/l/323AC0000000168/art-17/par-9 - 少年法 第十七条第十項（観護の措置） — https://japanlaw.org/ja/juvenile-act/art-17/par-10 · https://japanlaw.org/l/323AC0000000168/art-17/par-10 - 少年法 第十七条の二第一項（異議の申立て） — https://japanlaw.org/ja/juvenile-act/art-17-2/par-1 · https://japanlaw.org/l/323AC0000000168/art-17-2/par-1 - 少年法 第十七条の四第一項（少年鑑別所送致の場合の仮収容） — https://japanlaw.org/ja/juvenile-act/art-17-4/par-1 · https://japanlaw.org/l/323AC0000000168/art-17-4/par-1 - 少年法 第十七条の四第三項（少年鑑別所送致の場合の仮収容） — https://japanlaw.org/ja/juvenile-act/art-17-4/par-3 · https://japanlaw.org/l/323AC0000000168/art-17-4/par-3 - 少年法 第二十二条の三第二項（国選付添人） — https://japanlaw.org/ja/juvenile-act/art-22-3/par-2 · https://japanlaw.org/l/323AC0000000168/art-22-3/par-2 - 少年法 第二十六条第一項（決定の執行） — https://japanlaw.org/ja/juvenile-act/art-26/par-1 · https://japanlaw.org/l/323AC0000000168/art-26/par-1 - 少年法 第二十六条第二項（決定の執行） — https://japanlaw.org/ja/juvenile-act/art-26/par-2 · https://japanlaw.org/l/323AC0000000168/art-26/par-2 - 少年法 第二十六条の二第一項（少年鑑別所収容の一時継続） — https://japanlaw.org/ja/juvenile-act/art-26-2/par-1 · https://japanlaw.org/l/323AC0000000168/art-26-2/par-1 - 少年法 第三十二条の五第二項（抗告審における国選付添人） — https://japanlaw.org/ja/juvenile-act/art-32-5/par-2 · https://japanlaw.org/l/323AC0000000168/art-32-5/par-2 - 少年法 第四十三条第一項（勾留に代る措置） — https://japanlaw.org/ja/juvenile-act/art-43/par-1 · https://japanlaw.org/l/323AC0000000168/art-43/par-1 - 少年法 第四十三条第二項（勾留に代る措置） — https://japanlaw.org/ja/juvenile-act/art-43/par-2 · https://japanlaw.org/l/323AC0000000168/art-43/par-2 - 少年法 第四十四条第一項（勾留に代る措置の効力） — https://japanlaw.org/ja/juvenile-act/art-44/par-1 · https://japanlaw.org/l/323AC0000000168/art-44/par-1 - 少年法 第四十四条第二項（勾留に代る措置の効力） — https://japanlaw.org/ja/juvenile-act/art-44/par-2 · https://japanlaw.org/l/323AC0000000168/art-44/par-2 - 少年法 第四十五条第一項第一号（検察官へ送致後の取扱い） — https://japanlaw.org/ja/juvenile-act/art-45/par-1/item-1 · https://japanlaw.org/l/323AC0000000168/art-45/par-1/item-1 - 少年法 第四十五条第一項第四号（検察官へ送致後の取扱い） — https://japanlaw.org/ja/juvenile-act/art-45/par-1/item-4 · https://japanlaw.org/l/323AC0000000168/art-45/par-1/item-4 - 少年法 第四十五条第一項第七号（検察官へ送致後の取扱い） — https://japanlaw.org/ja/juvenile-act/art-45/par-1/item-7 · https://japanlaw.org/l/323AC0000000168/art-45/par-1/item-7 - 少年法 第五十三条第一項（少年鑑別所収容中の日数） — https://japanlaw.org/ja/juvenile-act/art-53/par-1 · https://japanlaw.org/l/323AC0000000168/art-53/par-1 - 少年法 第六十四条第四項（保護処分についての特例） — https://japanlaw.org/ja/juvenile-act/art-64/par-4 · https://japanlaw.org/l/323AC0000000168/art-64/par-4 - 少年法 第六十六条第三項（保護観察中の者に対する収容決定） — https://japanlaw.org/ja/juvenile-act/art-66/par-3 · https://japanlaw.org/l/323AC0000000168/art-66/par-3 - 少年法 附則第二条第一項（少年法の一部改正に伴う経過措置） — https://japanlaw.org/ja/juvenile-act/suppl-4121-142/art-2/par-1 · https://japanlaw.org/l/323AC0000000168/suppl-4121-142/art-2/par-1 - 少年法 附則第二条第二項（少年法の一部改正に伴う経過措置） — https://japanlaw.org/ja/juvenile-act/suppl-4121-142/art-2/par-2 · https://japanlaw.org/l/323AC0000000168/suppl-4121-142/art-2/par-2 --- ## Sources - claude-opus-5-5 — Corrections to the Ministry of Justice's English of the Juveniles Act, written 2026-11-03 - e-Gov 法令検索, Digital Agency (デジタル庁) — 少年法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/323AC0000000168/20260624_508AC0000000046), retrieved 2026-11-02 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Juveniles Act (少年法), Article 17, paragraph (10) — the Ministry of Justice's English as printed (https://www.japaneselawtranslation.go.jp/en/laws/view/4827/tb), retrieved 2026-11-02 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Juveniles Act (少年法), Article 17, paragraph (7) — the Ministry of Justice's English as printed (https://www.japaneselawtranslation.go.jp/en/laws/view/4827/tb), retrieved 2026-11-02 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Juveniles Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4827/tb), retrieved 2026-11-02 - claude-sonnet-5-5 — Machine translation, batch juvenile-act-20261102T172711-001, translated 2026-11-03 - This site's parser, version 220 — 少年法 — structure, counts, cross-references and defined terms, computed 2026-11-02