Non-farming labor supply plays an important role in household. This paper applies data of rural household in Sichuan and Anhui to analyze factors that affect the time of non-farming labor supply in household. The result shows that age of household members, average education of household, initial capital and ratio of male and female are important factors affect the time allocation of non-farming labor supply and lack of land is the key factor influence the supply of labor in farming. The paper suggests that the government should improve system completion in education and training programs, credit support, and communication facilities and so forth to increase time of non-farming labor supply in family.