In order to explore effects of aerobic exercises on immune molecule immunoglobulin（Ig） and complements activities of college female students, IgG, IgM, IgA or C3 quantity was tested respectively adopted single immunodiffusion. In addition, complements activities were analyzed by using complement hemolysis 50% （CH50）. The results showed that IgG quantities of sports participators who participated in the aerobic exercises three times per week were higher than the ones of the control group and the ones that participated in the test once a week. Furthemore,IgG quantities had significant differences in the tenth and twelveth week（P 〈 0.05）. From the eighth week C3 quantities and complements activities showed a apparent growth.