Objective To translate the English version of the Supportive Needs of Breastfeeding Scale（SNB） during hospitalization into Chinese,and to verify its reliability and validity. Methods The original scale was translated,back-translated,culturally adapted using the Brislin translation model to form the Chinese version of the scale. A convenience sampling method was used to survey 360 mothers in a tertiary specialized hospital in Shanghai from March to July 2021,in order to analyze the reliability and validity of the scale. Results The Chinese version of the scale included 4 dimensions of emotional needs,skill needs,informational needs and appraisal needs,with a total of 18 items. The content validity of the scale I-CVI content validity index ranged from 0.830 to 1.000,and the S-CVI mean content validity index was 0.930. Exploratory factor analysis used principal component analysis to extract 4 common factors with a cumulative variance contribution rate of 76.152%. After confirmatory factor analysis, χ²/df was 2.568;RMSEA was 0.023;the equations fit well. The Chinese version of the Breastfeeding Self-Efficacy Scale Short-Form was used as the calibration standard,and the calibration standard correlation validity was 0.714. The Cronbach’s alpha coefficient of the scale was 0.947;the split-half reliability was 0.953,and the test-retest reliability was 0.912. Conclusion The scale has good reliability and validity,and it can be used as an assessment tool for breastfeeding support needs during hospitalization.