The present study tried to identify 1) the factor structure of women's social identity 2) the factor structure of the collective competition strategy 3) the relationship between women's social identity and collective competition strategy. A sample of 451 women completed a questionnaire survey. Results showed the following main findings. First, three-factor model was the best-fitting model in explaining women's social identity; women category identification, group self-esteem, and negative identity. Second, in collective competition strategy, two-factor model was the best-fitting model; competition behavior and intergroup comparison. Third, in the relationship between women's social identity and collective competition strategy, along with the increase of women's social identity, participants' collective competition strategy increased. The results revealed in the present study were compared with the previous studies. Finally, the limitation and suggestions for future study were discussed.