Chinese medicine helps to dispel evil and prevent tumors Malignant tumor is one of the common diseases and major diseases that seriously endanger human health, and its incidence is gradually increasing. The prevention and treatment of malignant tumors has become an important issue of concern to the medical profession. Nowadays, clinical treatment of tumor tends to be more integrated and individualized. Long-term practice shows that the combination of Chinese and Western medicine is a better solution for the treatment of tumors, especially for patients with middle and late stage malignant tumors. Western medicine has stronger ability to kill and injure cancer cells and has better efficacy in the near future, but due to the toxic side effects of radiotherapy and chemotherapy drugs, for most tumors, Western medicine treatment alone cannot improve the cure rate, prolong the survival period and improve the quality of life. Although TCM has a weaker ability to kill cancer cells and has poorer recent efficacy, TCM can improve patients’ survival quality and have better long-term effects. Organic combination of western medical treatment and TCM treatment can not only effectively kill tumor cells, but also improve patient’s immunity, survival quality, reduce toxic side effects of chemotherapy and radiotherapy, reduce recurrence rate, and improve survival rate, etc. According to the theory of TCM, the occurrence of tumor disease is based on the dysfunction of human internal organs, imbalance of qi, blood, yin and yang, deficiency of positive qi plus the mutual agglomeration of phlegm, stasis and toxicity as the main factors. The treatment of tumor disease in TCM combines the traditional understanding with modern research, highlighting the holistic concept and the characteristics of evidence-based treatment. The basic principle of TCM in the treatment of tumor disease is to support the righteousness and dispel the evil. It runs through the whole process of tumor prevention and treatment. To help the righteous is both to help the righteousness and to adjust the disorders and deficiencies according to the patient’s constitution. The specific methods include benefiting Qi and nourishing Blood, nourishing Yin and generating fluid, nourishing Yin and filling essence, warming Yang and nourishing kidney, strengthening spleen and stomach, softening liver and nourishing liver, etc. The focus is on strengthening spleen and benefiting kidney. Dispelling evil is both to get rid of evil qi and to target phlegm, stasis and toxicity. Specific methods include activating blood circulation and removing blood stasis, clearing heat and detoxifying toxins, dispelling dampness and water, softening hardness and dispersing knots, etc. The specific treatment principles are determined according to the patient’s specific condition during clinical diagnosis and treatment. In general, the combination of Chinese and Western medicine in the treatment of tumor should be mainly based on Western medicine treatment methods and complemented by Chinese medicine treatment methods, both of which complement each other. The efficacy of TCM in the treatment of malignant tumors is more in reducing the toxic side effects of radiotherapy and chemotherapy, increasing the sensitivity of the body to drugs, as well as postoperative tonicity, promoting the recovery of the body, effectively avoiding or slowing down the recurrence or metastasis of tumors after surgery; significantly prolonging the survival period or survival with tumor and significantly improving the quality of survival. In addition to drug treatment, TCM treatment for tumor disease can also give guidance in spiritual and psychological adjustment, nutritional and dietary regimen, which are crucial for the recovery and treatment of tumor disease.