目的:分析江苏居民体重指数及其影响因素。方法:设计江苏省居民饮食习惯与健康问卷,采用偶遇法调查。结果:调查对象的体重指数为22.4±3.9,体重偏轻比例为10.7%,正常为62.7%,偏重为20.6%,肥胖为6.0%。性别、年龄、文化程度、婚姻状况以及饮食构成等因素对居民的体重指数存在影响。结论:居民应关注引起超重与肥胖的因素,控制好体重。 Objective: To analyze the body mass index of Jiangsu residents and its influencing factors. Methods: The dietary habits and health questionnaire of residents in Jiangsu Province were designed and investigated by accidental method. Results: The body mass index of subjects was 22.4 ± 3.9, the proportion of underweight was 10.7%, the normal was 62.7%, the bias was 20.6% and the obesity was 6.0%. Factors such as gender, age, education level, marital status and diet composition have an impact on residents’ body mass index. Conclusion: Residents should pay attention to the factors that cause overweight and obesity and control their weight.