This paper explores the effects of urbanization on nutrition transition and obesity. Taking adult individuals from the China Health and Nutrition Survey (CHNS), from the year 1989 to 2009, this study confirms the hypothesis that rising urbanization has positive effects on the obesity level. Also, the results reveal a nutrition transition towards a dietary pattern of more fat and protein intake in China. Particularly, evidence from the gender difference indicates that the effect of urbanization, along with the factors as education and income, on obesity is more pronounced for females than males.