To observe the therapeutic effect of modified compound Ban-mao capsule and Hong-dou-shan formula treating triple negative breast cancer.Methods:Forty-two patients suffered from triple negative breast cancer were divided into 2 groups. Patients in treatment group were treated with modified compound Ban-mao capsule and Hong-dou-shan formula and received regular check. Patients in control group were only checked regularly. The rate of recurrence and metastasis was compared after continual observation of 5 years.Results:The total effective rate in treatment group was 95.2%, and that of control group was 71.4%. The difference between the two groups were significant.Conclusion:Modified Compound Ban-mao capsule and Hong-dou-shan formula is effective in treating triple negative breast cancer and could prevent recurrence and metastasis after surgery.