# 出入国管理及び難民認定法 / Immigration Control and Refugee Recognition Act — 第五十五条の五十一 (Article 55-51) This is the Markdown twin of https://japanlaw.org/en/immigration-control-act/art-55-51. 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: 出入国管理及び難民認定法 (Immigration Control and Refugee Recognition Act), 昭和二十六年政令第三百十九号 - English title "Immigration Control and Refugee Recognition 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. - Issued as a Cabinet Order and given the force of an Act, which is why its number says 政令: Some rules made during the Allied occupation were issued as Cabinet Orders, as orders implementing Japan's acceptance of the Potsdam Declaration, and an Act passed in 1952 gave them the force of an Act. They keep the Cabinet Order number they were issued under, which is why e-Gov lists the law as an Act while its number says 政令 (Cabinet Order). The Immigration Control and Refugee Recognition Act (出入国管理及び難民認定法) is one: it was promulgated in 1951 as the Immigration Control Order (出入国管理令), Cabinet Order No. 319 of 1951, has had the force of an Act under Article 4 of Act No. 126 of 1952, took its present title on 1 January 1982, and every amendment on e-Gov's record of it was made by an Act. - Provision: 第五十五条の五十一 (Article 55-51)（制止等の措置） — address `art-55-51` - Text in force since: 2026-10-01 - URL (the page that opens at this provision): https://japanlaw.org/en/immigration-control-act/art-55-51 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/326CO0000000319/art-55-51 - 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. --- ### 第五十五条の五十一（制止等の措置） — Measures to Stop Acts, etc. caption: machine translation, not official art-55-51 · https://japanlaw.org/en/immigration-control-act/art-55-51 · https://japanlaw.org/l/326CO0000000319/art-55-51 **第一項** 入国警備官は、被収容者が自身を傷つけ若しくは他人に危害を加え、逃走し、入国者収容所等の職員の職務の執行を妨げ、その他入国者収容所等の規律及び秩序を著しく害する行為をし、又はこれらの行為をしようとする場合には、合理的に必要と判断される限度で、その行為を制止し、その被収容者を拘束し、その他その行為を抑止するため必要な措置をとることができる。 art-55-51/par-1 · https://japanlaw.org/en/immigration-control-act/art-55-51/par-1 · https://japanlaw.org/l/326CO0000000319/art-55-51/par-1 If a detainee injures themselves or inflicts harm on another person, escapes, obstructs the performance of duties of an official of the immigration detention center, etc., or otherwise engages in an act that seriously harms discipline and order at the immigration detention center, etc., or attempts to engage in any of these acts, an immigration control officer may, to the extent judged reasonably necessary, stop the act, restrain the detainee, and take other measures necessary to suppress the act. machine translation, not official **第二項** 入国警備官は、被収容者以外の者が次の各号のいずれかに該当する場合には、合理的に必要と判断される限度で、その行為を制止し、その行為をする者を拘束し、その他その行為を抑止するため必要な措置をとることができる。 art-55-51/par-2 · https://japanlaw.org/en/immigration-control-act/art-55-51/par-2 · https://japanlaw.org/l/326CO0000000319/art-55-51/par-2 If a person other than a detainee falls under any of the following items, an immigration control officer may, to the extent judged reasonably necessary, stop the act, restrain the person engaging in the act, and take other measures necessary to suppress the act: machine translation, not official **一** 入国者収容所等に侵入し、その設備を損壊し、入国者収容所等の職員の職務の執行を妨げ、又はこれらの行為を正にしようとするとき。 art-55-51/par-2/item-1 · https://japanlaw.org/en/immigration-control-act/art-55-51/par-2/item-1 · https://japanlaw.org/l/326CO0000000319/art-55-51/par-2/item-1 if the person intrudes into the immigration detention center, etc., damages its facilities, obstructs the performance of duties of an official of the immigration detention center, etc., or is on the verge of engaging in any of these acts; machine translation, not official **二** 入国警備官の要求を受けたのに入国者収容所又は地方出入国在留管理局から退去しないとき。 art-55-51/par-2/item-2 · https://japanlaw.org/en/immigration-control-act/art-55-51/par-2/item-2 · https://japanlaw.org/l/326CO0000000319/art-55-51/par-2/item-2 if the person does not leave the immigration detention center or regional immigration services bureau despite a demand by an immigration control officer; machine translation, not official **三** 被収容者の逃走又は入国者収容所等の職員の職務執行の妨害を、現場で、援助し、あおり、又は唆すとき。 art-55-51/par-2/item-3 · https://japanlaw.org/en/immigration-control-act/art-55-51/par-2/item-3 · https://japanlaw.org/l/326CO0000000319/art-55-51/par-2/item-3 if the person, at the scene, assists, incites or instigates the escape of a detainee or the obstruction of the performance of duties of an official of the immigration detention center, etc.; machine translation, not official **四** 被収容者に危害を加え、又は正に加えようとするとき。 art-55-51/par-2/item-4 · https://japanlaw.org/en/immigration-control-act/art-55-51/par-2/item-4 · https://japanlaw.org/l/326CO0000000319/art-55-51/par-2/item-4 if the person inflicts harm on a detainee or is on the verge of doing so. machine translation, not official **第三項** 前二項の措置に必要な警備用具については、法務省令で定める。 art-55-51/par-3 · https://japanlaw.org/en/immigration-control-act/art-55-51/par-3 · https://japanlaw.org/l/326CO0000000319/art-55-51/par-3 The security equipment necessary for the measures set forth in the preceding two paragraphs is specified by Ministry of Justice Order. machine translation, not official --- ## Cites - art-55-51/par-3: 前二項 → 出入国管理及び難民認定法 第五十五条の五十一第一項 (Article 55-51, paragraph (1)), art-55-51/par-1 — https://japanlaw.org/en/immigration-control-act/art-55-51/par-1 · https://japanlaw.org/l/326CO0000000319/art-55-51/par-1 - art-55-51/par-3: 前二項 → 出入国管理及び難民認定法 第五十五条の五十一第二項 (Article 55-51, paragraph (2)), art-55-51/par-2 — https://japanlaw.org/en/immigration-control-act/art-55-51/par-2 · https://japanlaw.org/l/326CO0000000319/art-55-51/par-2 ## Cited by 2 provisions cite this one. No official source publishes this direction. - 出入国管理及び難民認定法 第五十五条の五十一第三項（制止等の措置） — https://japanlaw.org/en/immigration-control-act/art-55-51/par-3 · https://japanlaw.org/l/326CO0000000319/art-55-51/par-3 - 出入国管理及び難民認定法施行規則 第五十条の二十六第一項（警備用具） — https://japanlaw.org/en/immigration-control-act-enforcement-regulation/art-50-26/par-1 · https://japanlaw.org/l/356M50000010054/art-50-26/par-1 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 出入国管理及び難民認定法 — the text in force from 2026-10-01 (https://laws.e-gov.go.jp/law/326CO0000000319/20261001_508AC0000000032), retrieved 2026-10-05 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Immigration Control and Refugee Recognition Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3624/tb), retrieved 2026-09-13 - claude-opus-5[1m] — Machine translation, batch immigration-control-act-20260913T134912-020, translated 2026-09-13 - claude-opus-5[1m] — Machine translation, batch immigration-control-act-20260913T134912-021, translated 2026-09-13 - This site's parser, version 223 — 出入国管理及び難民認定法 — structure, counts, cross-references and defined terms, computed 2026-10-05