When do I use 不要 vs 不用?

Use 不要 to forbid an action ('don't do it'), and 不用 to say an action is unnecessary ('you don't need to do it'). For example, 不要跑 means 'Don't run', while 不用跑 means 'There's no need to run'.

Can 不要 mean 'I don't want something'?

Yes. In standard Mandarin, 不要 is commonly used as a verb to express 'do not want' an object, e.g., 我不要咖啡 (Wǒ bú yào kāfēi, 'I don't want coffee'). This usage is not old-fashioned or dialectal; it is perfectly standard.

Is 不用 ever used as a prohibition?

No. 不用 never conveys prohibition. It only indicates lack of necessity. To forbid, you must use 不要 or another negated imperative like 别 (bié).

How do I politely refuse an offer?

The most natural polite refusal is 不用 (了) + 谢谢. For example, 要不要帮忙？不用了，谢谢. Using 不要 in that situation can sound abrupt or even rude because it is a direct prohibition.

Easily confusedHSK 2

不要 vs 不用 (búyào vs búyòng): “don’t” vs “no need to”

不要 (búyào) and 不用 (búyòng) both express negative imperatives but differ in force: 不要 forbids an action (“don’t!”), while 不用 indicates that an action is unnecessary (“you needn’t”). Understanding this distinction helps learners avoid confusing a prohibition with a suggestion of needlessness.

Both 不要 and 不用 are used to tell someone not to do something, but they differ in the reason behind the negation. 不要 is a direct prohibition: the speaker orders the listener to refrain from an action. 不用, on the other hand, implies that the action is not required or that there is no need to do it—it is a softer, often polite way to decline help or dismiss a suggestion. The core mental model: 不要 = “don’t (I forbid it)”; 不用 = “don’t need to (it’s unnecessary).”

使い分け

不要bú yào

don't

Use 不要 to give a direct command forbidding an action, or to express that you do not want something. It is the standard way to say “don’t” in Mandarin, equivalent to a strong prohibition. It also functions as a verb meaning “do not want” when referring to objects (e.g., 我不要这个 'I don’t want this').

不用bú yòng

no need to

Use 不用 to indicate that an action is unnecessary. It is often used to politely decline an offer of help or to tell someone not to bother doing something. It does not carry the strong forbidding tone of 不要; rather, it suggests that the action is not required or that the speaker can manage without it.

In spoken Chinese, 不用 can also be used to mean “don’t need to” in factual statements (e.g., 你不用来 'You don’t need to come'), not just in commands.

ひと目で分かる

	不要	不用
Core meaning	Prohibition: 'don’t' / 'must not'	Unnecessary: 'no need to' / 'don’t have to'
Tone / Register	Direct, often forceful	Softer, polite, dismissive of necessity
Usage with objects (verb meaning)	Can mean 'do not want' an object (e.g., 我不要钱 'I don’t want money')	Cannot be used to mean 'do not want'; instead means 'not use' or 'no need'
Negation of actions	Commands: don’t do X	Declares: you needn’t do X
Answer to offers	不 (bù) alone or 不要 can refuse an offer (e.g., 要不要咖啡？不要 'Coffee? – No')	不用 is a natural, polite way to say 'no, I don’t need help' (e.g., 要不要帮忙？不用 'Need help? – No thanks')

例文

不要
不要说话。
Bú yào shuō huà.
Don’t speak.
Command forbidding speech.
不用
不用帮忙。
Bú yòng bāng máng.
No need to help.
Declining an offer politely.
不要
上课不要玩手机。
Shàng kè bú yào wán shǒu jī.
Don’t play with your phone in class.
Rule or prohibition.
不用
你不用来教室了。
Nǐ bú yòng lái jiào shì le.
You don’t need to come to the classroom.
States that an action is unnecessary.
不要
我不要这个，要那个。
Wǒ bú yào zhè ge, yào nà ge.
I don’t want this one; I want that one.
不要 used as a verb meaning 'do not want' an object.
不用
A:要不要我帮你？B:不用了，谢谢。
A: yào bú yào wǒ bāng nǐ? B: bú yòng le, xiè xie.
A: Do you want me to help you? B: No need, thanks.
Standard polite refusal of an offer.

よくある間違い

Using 不用 to strongly forbid an action (e.g., *不用跑！). Use 不要 to mean 'don't run'.
Using 不要 to politely decline help (e.g., *不要了，谢谢 for 'No need, thanks'). 不用 is more appropriate.
Confusing 不要 as a verb meaning 'do not want' with 不想 (bù xiǎng) when expressing unwillingness to do something: 不要 can mean 'don't want' for objects, but for actions, 不想 is often clearer (e.g., 我不想去 vs 我不要去).
Using 不用 in place of 不要 when forbidding something (e.g., *不用抽烟 for 'Don't smoke'). It's not a prohibition.

よくある質問

When do I use 不要 vs 不用?: Use 不要 to forbid an action ('don't do it'), and 不用 to say an action is unnecessary ('you don't need to do it'). For example, 不要跑 means 'Don't run', while 不用跑 means 'There's no need to run'.
Can 不要 mean 'I don't want something'?: Yes. In standard Mandarin, 不要 is commonly used as a verb to express 'do not want' an object, e.g., 我不要咖啡 (Wǒ bú yào kāfēi, 'I don't want coffee'). This usage is not old-fashioned or dialectal; it is perfectly standard.
Is 不用 ever used as a prohibition?: No. 不用 never conveys prohibition. It only indicates lack of necessity. To forbid, you must use 不要 or another negated imperative like 别 (bié).
How do I politely refuse an offer?: The most natural polite refusal is 不用 (了) + 谢谢. For example, 要不要帮忙？不用了，谢谢. Using 不要 in that situation can sound abrupt or even rude because it is a direct prohibition.