# 少年法 / Juveniles Act — 第六十六条 (Article 66) This is the Markdown twin of https://japanlaw.org/ja/juvenile-act/art-66. 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: 第六十六条 (Article 66)（保護観察中の者に対する収容決定） — address `art-66` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/ja/juvenile-act/art-66 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/323AC0000000168/art-66 - 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. --- ### 第六十六条（保護観察中の者に対する収容決定） — (Ruling of Detention of a Person Under Probation to a Juvenile Training School) caption: Ministry of Justice translation — Japanese Law Translation Database System art-66 · https://japanlaw.org/ja/juvenile-act/art-66 · https://japanlaw.org/l/323AC0000000168/art-66 **第一項** 更生保護法第六十八条の二の申請があつた場合において、家庭裁判所は、審判の結果、第六十四条第一項第二号の保護処分を受けた者がその遵守すべき事項を遵守しなかつたと認められる事由があり、その程度が重く、かつ、少年院において処遇を行わなければ本人の改善及び更生を図ることができないと認めるときは、これを少年院に収容する旨の決定をしなければならない。ただし、この項の決定により既に少年院に収容した期間が通算して同条第二項の規定により定められた期間に達しているときは、この限りでない。 art-66/par-1 · https://japanlaw.org/ja/juvenile-act/art-66/par-1 · https://japanlaw.org/l/323AC0000000168/art-66/par-1 If the application referred to in Article 68-2 of the Offenders Rehabilitation Act is filed, the family court, by a ruling, must detain a juvenile at a juvenile training school when the family court, as a result of the trial and decision, has reasonable grounds to show that the juvenile who is subject to the disposition for rehabilitation of an adjudicated delinquent referred to in Article 64, paragraph (1), item (ii) failed to comply with the matters to be observed, and the family court finds that the failure is so serious, and that it is impossible to improve or rehabilitate the juvenile without treating the juvenile at a juvenile training school; provided, however, that this does not apply if the total period during which the juvenile has already been detained at a juvenile training school by the ruling referred to in this paragraph reaches the period specified pursuant to the provisions of Article 64, paragraph (2). Ministry of Justice translation with a slip corrected by this site — not the Ministry's text; the Ministry printed: "If the application referred to in Article 68-2 of the Offender Rehabilitation Act is filed, the family court, by a ruling, must detain a juvenile at a juvenile training school when the family court, as a result of the trial and decision, has reasonable grounds to show that the juvenile who is subject to the disposition for rehabilitation of an adjudicated delinquent referred to in Article 64, paragraph (1), item (ii) failed to comply with the matters to be observed, and the family court finds that the failure is so serious, and that it is impossible to improve or rehabilitate the juvenile without treating the juvenile at a juvenile training school; provided, however, that this does not apply if the total period during which the juvenile has already been detained at a juvenile training school by the ruling referred to in this paragraph reaches the period specified pursuant to the provisions of Article 64, paragraph (2)." — https://www.japaneselawtranslation.go.jp/en/laws/view/4827/tb **第二項** 次項に定めるもののほか、前項の決定に係る事件の手続は、その性質に反しない限り、この法律（この項を除く。）の規定による特定少年である少年の保護事件の手続の例による。 art-66/par-2 · https://japanlaw.org/ja/juvenile-act/art-66/par-2 · https://japanlaw.org/l/323AC0000000168/art-66/par-2 Beyond what is provided for in the following paragraph, the procedure in the case on the ruling referred to in the preceding paragraph is governed by the same rules as those applicable to the procedure for a juvenile protection case of a specified juvenile provided for in this Act (excluding this paragraph), unless it is contrary to its nature. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 第一項の決定をする場合においては、前項の規定によりその例によることとされる第十七条第一項第二号の措置における収容及び更生保護法第六十八条の三第一項の規定による留置の日数は、その全部又は一部を、第六十四条第二項の規定により定められた期間に算入することができる。 art-66/par-3 · https://japanlaw.org/ja/juvenile-act/art-66/par-3 · https://japanlaw.org/l/323AC0000000168/art-66/par-3 When making the ruling referred to in paragraph (1), the days spent under detention, with respect to the measures referred to in Article 17, paragraph (1), item (ii), or the detention provided for in Article 68-3, paragraph (1) of the Offenders Rehabilitation Act, which is governed by the same rules as those applicable under these provisions pursuant to the provisions of the preceding paragraph, may be included in whole, or in part, to the period specified pursuant to the provisions of Article 64, paragraph (2). Ministry of Justice translation with a slip corrected by this site — not the Ministry's text; the Ministry printed: "When making the ruling referred to in paragraph (1), the days spent under detention, with respect to the measures referred to in Article 17, paragraph (1), item (ii), or the detention provided for in Article 68-3, paragraph (1) of the Offender Rehabilitation Act, which is governed by the same rules as those applicable under these provisions pursuant to the provisions of the preceding paragraph, may be included in whole, or in part, to the period specified pursuant to the provisions of Article 64, paragraph (2)." — https://www.japaneselawtranslation.go.jp/en/laws/view/4827/tb --- ## Cites - art-66/par-1: 更生保護法第六十八条の二 → e-Gov law 419AC0000000088, 第六十八条の二 (Article 68-2), art-68-2 — not held in this collection - art-66/par-1: 第六十四条第一項第二号 → 少年法 第六十四条第一項第二号 (Article 64, paragraph (1), item (ii)), art-64/par-1/item-2 — https://japanlaw.org/ja/juvenile-act/art-64/par-1/item-2 · https://japanlaw.org/l/323AC0000000168/art-64/par-1/item-2 - art-66/par-1: この項 → 少年法 第六十六条第一項 (Article 66, paragraph (1)), art-66/par-1 — https://japanlaw.org/ja/juvenile-act/art-66/par-1 · https://japanlaw.org/l/323AC0000000168/art-66/par-1 - art-66/par-1: 同条第二項 → 少年法 第六十四条第二項 (Article 64, paragraph (2)), art-64/par-2 — https://japanlaw.org/ja/juvenile-act/art-64/par-2 · https://japanlaw.org/l/323AC0000000168/art-64/par-2 - art-66/par-2: 次項 → 少年法 第六十六条第三項 (Article 66, paragraph (3)), art-66/par-3 — https://japanlaw.org/ja/juvenile-act/art-66/par-3 · https://japanlaw.org/l/323AC0000000168/art-66/par-3 - art-66/par-2: 前項 → 少年法 第六十六条第一項 (Article 66, paragraph (1)), art-66/par-1 — https://japanlaw.org/ja/juvenile-act/art-66/par-1 · https://japanlaw.org/l/323AC0000000168/art-66/par-1 - art-66/par-2: この項 → 少年法 第六十六条第二項 (Article 66, paragraph (2)), art-66/par-2 — https://japanlaw.org/ja/juvenile-act/art-66/par-2 · https://japanlaw.org/l/323AC0000000168/art-66/par-2 - art-66/par-3: 第一項 → 少年法 第六十六条第一項 (Article 66, paragraph (1)), art-66/par-1 — https://japanlaw.org/ja/juvenile-act/art-66/par-1 · https://japanlaw.org/l/323AC0000000168/art-66/par-1 - art-66/par-3: 前項 → 少年法 第六十六条第二項 (Article 66, paragraph (2)), art-66/par-2 — https://japanlaw.org/ja/juvenile-act/art-66/par-2 · https://japanlaw.org/l/323AC0000000168/art-66/par-2 - art-66/par-3: 第十七条第一項第二号 → 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-66/par-3: 更生保護法第六十八条の三第一項 → e-Gov law 419AC0000000088, 第六十八条の三第一項 (Article 68-3, paragraph (1)), art-68-3/par-1 — not held in this collection - art-66/par-3: 第六十四条第二項 → 少年法 第六十四条第二項 (Article 64, paragraph (2)), art-64/par-2 — https://japanlaw.org/ja/juvenile-act/art-64/par-2 · https://japanlaw.org/l/323AC0000000168/art-64/par-2 ## Cited by 6 provisions cite this one. No official source publishes this direction. - 出入国管理及び難民認定法 第六十二条第三項（通報） — https://japanlaw.org/ja/immigration-control-act/art-62/par-3 · https://japanlaw.org/l/326CO0000000319/art-62/par-3 - 労働基準法施行規則 第三十七条の二第一項第二号 — https://japanlaw.org/ja/labor-standards-act-enforcement-ordinance/art-37-2/par-1/item-2 · https://japanlaw.org/l/322M40000100023/art-37-2/par-1/item-2 - 少年法 第六十四条第二項（保護処分についての特例） — https://japanlaw.org/ja/juvenile-act/art-64/par-2 · https://japanlaw.org/l/323AC0000000168/art-64/par-2 - 少年法 第六十六条第一項（保護観察中の者に対する収容決定） — https://japanlaw.org/ja/juvenile-act/art-66/par-1 · https://japanlaw.org/l/323AC0000000168/art-66/par-1 - 少年法 第六十六条第二項（保護観察中の者に対する収容決定） — https://japanlaw.org/ja/juvenile-act/art-66/par-2 · https://japanlaw.org/l/323AC0000000168/art-66/par-2 - 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 --- ## 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 66, paragraph (1) — 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 66, paragraph (3) — 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 - This site's parser, version 220 — 少年法 — structure, counts, cross-references and defined terms, computed 2026-11-02