Through syste matic review of the relevant literature in the last 20 years，this study believes that the therapy of strengthening and consolidating body resistance can improve the immune function and quality of life of patients with tumor and prolong their life.This study particularly carries out a system atic summary and review in term s of the anti-tumor active components of Chinese herbal medicine Radix Astragali， its anti-tumor mechanism， its therapeutic effect on myelosuppression，its performance on reducing toxicity and increasing the therapeutic effect，in order to provide reference for further research and development of Radix Astragali.