Public Safety in Japanese: How to Use 治安 (chian) Naturally

2019年8月11日2026年4月22日

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Yuka

I’ve been reading about Japan and keep seeing 治安 mentioned. What does it mean and how do I use it?

Rei

治安 (chian) means public safety or law and order — it’s used to describe how safe or dangerous an area is. Japan is famous for its high 治安, and knowing this word will help you discuss safety in Japanese naturally.

治安 (ちあん / chian) is the Japanese word for public safety, public order, or law and order. It’s used to evaluate how safe a city, region, or country is — and it’s a topic that comes up frequently when discussing Japan, travel, and social issues.

Expression	Reading	Meaning
治安	ちあん (chian)	Public safety / law and order
治安がいい	ちあんがいい	Good public safety (safe area)
治安が悪い	ちあんがわるい	Poor public safety (unsafe area)
治安維持	ちあんいじ	Maintaining public order

TOC

Basic Usage: Describing Safety

治安がいい / 悪い is the most common way to describe the safety level of a place. It’s used for cities, neighborhoods, countries, and regions.

Japanese	English
日本は治安がいい国です。	Japan is a country with good public safety.
この地域は治安が悪い。	This area has poor public safety.
治安のいい街に住みたい。	I want to live in a safe city.
最近、治安が悪化している。	Public safety has been deteriorating recently.

Yuka

So 治安がいい is the standard phrase for saying a place is safe?

Rei

Exactly. And 治安がいい is one of the most common things you’ll hear foreigners say about Japan — Japan’s reputation for safety is well-known globally.

Japan’s 治安 Reputation

Japan consistently ranks among the safest countries in the world. Low crime rates, high trust between citizens, and effective law enforcement contribute to Japan’s strong 治安. This is something Japanese people are proud of and often discuss when talking to foreigners.

Japanese	English
日本は世界でも有数の治安のいい国だ。	Japan is one of the safest countries in the world.
夜一人で歩いても治安がいいから安心だ。	I feel safe walking alone at night because public safety is good.
治安の良さが日本の魅力の一つだ。	Good public safety is one of Japan’s attractions.

Yuka

Is it safe to say Japan’s 治安 is genuinely good — or is that just a stereotype?

Rei

By most objective measures — crime statistics, safety surveys — Japan’s 治安 is genuinely excellent. Of course no country is perfect, but Japan’s low violent crime rate is real and widely recognized.

Related Vocabulary

Japanese	Reading	English
犯罪	はんざい (hanzai)	Crime
安全	あんぜん (anzen)	Safety / safe
危険	きけん (kiken)	Danger / dangerous
防犯	ぼうはん (bouhan)	Crime prevention
警察	けいさつ (keisatsu)	Police
治安悪化	ちあんあっか	Deterioration of public safety

Quick Quiz

Fill in the blank:

1. 旅行先を選ぶとき、___は重要な基準だ。(Public safety is an important factor when choosing a travel destination.)
2. 日本は___が良くて、夜も歩きやすい。(Japan has good public safety and is easy to walk around at night.)
3. 最近その地区の___が悪化している。(Public safety in that district has been getting worse recently.)

Answers: All three = 治安

Summary

Expression	Meaning
治安がいい	Public safety is good (safe)
治安が悪い	Public safety is poor (unsafe)
治安悪化	Deterioration in public safety
治安維持	Maintaining public order

Yuka

日本の治安の良さは本当に素晴らしいと思う！外国人としてとても安心できる。

Rei

Many visitors feel the same way. And now you can express that feeling perfectly in Japanese — using exactly the word Japanese people use to discuss it.

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