Abstract:Objective: Observing the immune modulation of Pu Tian Chun Capsule tumor patients during radiotherapy. Methods: Randomly divided 60 malignant tumor patients into Pu Tian Chun group and Control group with 30 patients each. Measured the subgroups of T cell, NK cells and performed the routine blood test before and after radiotherapy. Results: Both groups have a higher level of CD4, CD4/CD8NK cells after therapy, and CD8 decreased after therapy. Pu Tian Chun Group showed significant difference form Control group (P<0.05). Conclusion: Pu Tian Chun Capsule can improve the immunity of patients during the radiotherapy for malignant tumor patients, and worth to be used in clinical therapy.