Abstract: Objective To evaluate influencing factors of overweight and obesity among adult populations in China.Methods Studies on impact factors of overweight and obesity among Chinese adult populations published from 2010 to 2014 were searched through PubMed,CNKI and Wanfang database and analyzed with RevMan 5.1 and Stata 11.The data collected were combined using fixed and random effect model and the odds ratio(OR)and its 95%confidence interval(95%CI)were calculated.Begg rank correlation and funnel plot were adopted in the estimation of publishing bias.Results A total of 19 researches(95 798 adult participants)were included in the study.The significant overweight/obesity related factors were high-fat diet,alcohol drinking,age,smoking,and physical exercise,with the combined ORs(95%CI)of 1.37(1.17,1.59),1.12(1.03,1.22),1.03(1.01,1.05),0.72(0.67,0.77),and 0.79(0.63,0.98),respectively.Conclusion High-fat diet,alcohol drinking,and age are risk factors,while smoking and physical exercise are protective factors for overweight and obesity among Chinese adults.