HSK 3 · Verbs
必须 bìxū “must” in Chinese
Traditional 必須
What 必须 means
- must
- have to
How to say 必须
必bì4th tone, falling
须xū1st tone, high and level
必须 in a sentence
How 必须 is built
Each colour is one part of the character. Parts repeat across thousands of characters, so learning them makes new words easier. See all 214 in our radicals chart.

必bìcertainly
- 心heart · xīn
- 丿slash · piě

须xūmust
- 彡bristle · shān
- 页page · xié
How to write 必须
必 5 strokes · 须 9 strokes
Watch the order, then press Try writing it and draw each stroke in the grid. Each stroke is checked as you go.

Words related to 必须
Words with 必
必要bìyào · necessary必然bìrán · inevitable何必hébì · there is no need未必wèibì · not necessarily势必shìbì · bound to务必wùbì · must
Words with 须
More words: Thinking & Talking
FAQs
必须 (bìxū) means “must” or “have to”. It is an HSK 3 word.
Say it bìxū: bì with a 4th tone, then xū with a 1st tone. Press Listen at the top of this page to hear it, or Slowly to hear each tone clearly.
In Traditional characters, used in Taiwan and Hong Kong, 必须 is written 必須. The pronunciation is the same.
Add a Chinese (Simplified) pinyin keyboard to your phone or computer, type bixu with no tone marks or spaces, then choose 必须 from the suggestions. Typing bixu into this dictionary’s search box finds it too.
必须 is an HSK 3 word in the HSK 2.0 word lists.
Sources: meaning and pinyin checked by a native Mandarin teacher against the official HSK lists. Extra meanings from CC-CEDICT (CC BY-SA 4.0). Example sentences from Tatoeba (CC BY 2.0 FR). Character parts and stroke order from Make Me a Hanzi.