Abstract:A systematic study on the factors affecting female workers' choices of informal employment is not only of great significance for revealing the mechanism of their informal employment choices, but also has a profound impact on the protection of their rights and interests. Based on the data from the Chinese Social Survey (CSS), this study analyzes the factors that affect women's informal employment, and examines the factors affecting women* s choices of different employment identities and types of occupations. The results show that the informal employment has become the main channel for women's non-agricultural employment. Moreover, personal characteristics and family factors such as household registration, the number of children in the family and economic regions have a significant impact on female workers' informal employment choices. Human capital, however, has a significant impact not only on women1 s choices of informal employment, but also on their choices of employment identity and types of occupations. The result of this study suggests that informal employment policies be improved, and measures be formulated by combining with factors affecting women1 s informal employment to protect their legal rights, raise the level of human capital of female workers, and thereby improve the quality of informal employment of female workers.