# 民事訴訟法 / Code of Civil Procedure — 第三百七十条 (Article 370) - Law: 民事訴訟法 (Code of Civil Procedure), 平成八年法律第百九号 - English title "Code of Civil Procedure": 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: 第三百七十条 (Article 370)（一期日審理の原則） — address `art-370` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/ja/code-of-civil-procedure/art-370 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/408AC0000000109/art-370 - 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. --- ### 第三百七十条（一期日審理の原則） — (The Single-Day Trial Principle) caption: Ministry of Justice translation — Japanese Law Translation Database System art-370 · https://japanlaw.org/ja/code-of-civil-procedure/art-370 · https://japanlaw.org/l/408AC0000000109/art-370 **第一項** 少額訴訟においては、特別の事情がある場合を除き、最初にすべき口頭弁論の期日において、審理を完了しなければならない。 art-370/par-1 · https://japanlaw.org/ja/code-of-civil-procedure/art-370/par-1 · https://japanlaw.org/l/408AC0000000109/art-370/par-1 In a small claims action, unless there are special circumstances, the trial must be completed on the first date for oral arguments. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 当事者は、前項の期日前又はその期日において、すべての攻撃又は防御の方法を提出しなければならない。ただし、口頭弁論が続行されたときは、この限りでない。 art-370/par-2 · https://japanlaw.org/ja/code-of-civil-procedure/art-370/par-2 · https://japanlaw.org/l/408AC0000000109/art-370/par-2 The parties must advance all allegations and evidence prior to the date referred to in the preceding paragraph or on that date; provided, however, that this does not apply if oral arguments are continued. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-370/par-2: 前項 → 民事訴訟法 第三百七十条第一項 (Article 370, paragraph (1)), art-370/par-1 — https://japanlaw.org/ja/code-of-civil-procedure/art-370/par-1 · https://japanlaw.org/l/408AC0000000109/art-370/par-1 ## Cited by 1 provision cites this one. No official source publishes this direction. - 民事訴訟法 第三百七十条第二項（一期日審理の原則） — https://japanlaw.org/ja/code-of-civil-procedure/art-370/par-2 · https://japanlaw.org/l/408AC0000000109/art-370/par-2 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 民事訴訟法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/408AC0000000109/20260624_508AC0000000046), retrieved 2026-10-17 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Code of Civil Procedure — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4797/tb), retrieved 2026-10-17 - This site's parser, version 209 — 民事訴訟法 — structure, counts, cross-references and defined terms, computed 2026-10-17