The role of traditional Chinese medicine on renal malignant tumors is discussed as follows: 1. The role of tonifying kidney qi: Kidney belongs to the nature of the latter day, nurturing the spirit of the latter day, and the kidney sheds yuan yin and yuan yang, which is the basis of yin and yang of the whole body. Kidney qi is full of the body’s ability to resist disease, positive qi is real, the evil does not interfere, kidney qi drumming the whole body’s qi and blood flow, transportation of nutrients, the body is able to overcome the external evil, resistance to disease in the outside. Sun Qing, Department of Surgery, Jinan Hospital of Traditional Chinese Medicine, Jinan, China 2 Possible role of drugs to replenish kidney qi: through the application of drugs to replenish kidney qi in the treatment of renal malignant tumors, its possible mechanism is to increase the time of tumor dormancy of renal tumor patients and prolong their ability to survive with tumor. The effect may also be exerted through immunomodulatory action. The efficacy of traditional Chinese medicine is judged by applying the treatment of kidney qi replenishing traditional Chinese medicine and observing the changes of renal tumor cell lines. This is one of the topics we will study next, so as to prove whether traditional Chinese medicine can work on dormant tumor cells, and to provide scientific basis for the application of renal qi replenishing drugs to treat patients with renal malignant tumors.