Tumor is a kind of common disease, multi-morbidity and chronic disease, among which malignant tumor is one of the most serious diseases endangering human health at present, and comprehensive treatment of malignant tumor is a recognized treatment measure. The tumor is a new organism formed by cells that have lost their growth control, and it is a body cell that has accumulated different genetic mutations, which is the result of the interaction between oncogenes and oncogenes, The mechanism of action of western drugs is relatively clear, and many chemotherapeutic drugs have a strong ability to kill tumor cells, with faster onset of action and better recent efficacy. However, due to the toxic side effects of chemotherapy drugs, for many tumors, western chemotherapy alone cannot prolong survival and improve quality of life, and many chemotherapy drugs have poor long-term efficacy, the occurrence of tumors is a multifactorial and multi-stage process, and anti-tumor drugs also need multiple links and multiple targets, so it cannot be a single method, a single gene, a single drug, but must take an integrated treatment approach. The tumor is caused by a series of pathological changes such as deficiency of vital energy, imbalance of internal organs, incompatibility of qi and blood, obstruction of meridians, imbalance of yin and yang, etc., which will lead to qi stagnation and blood stasis, phlegm condensation and dampness, etc., thus blocking the meridians, losing the flow of qi, and forming lumps in the long run. Research on the mechanism shows that the mechanism of anti-tumor of Chinese medicine and its active ingredients is realized through multi-target, multi-path and multi-link, and Chinese medicine regulates the immune function of tumor patients through enhancing immune function and suppressing immune response to achieve the purpose of inhibiting tumor growth, some Chinese medicines not only act on one immune link, but also on multiple links, enhancing immune function, making the patient’s resistance improve and helping to stabilize the disease. Activation of immune function can directly kill tumor cells, suppress humoral immunity, reduce the generation of antigen-antibody immune complexes, inhibit tumor angiogenesis, induce tumor cell apoptosis, induce tumor cell differentiation, reverse tumor cell multi-drug resistance, etc., so as to achieve the purpose of treating tumor, Chinese medicine can reduce chemoradiotherapy reactions, increase the efficacy, improve tumor suppression, and improve survival rate. The combination of Chinese and Western medicine is better than the use of drugs alone in the treatment of tumors, and Chinese medicine can make up for the shortcomings of Western medicine, while Western medicine surgery, radiotherapy and chemotherapy are the weak links of Chinese medicine treatment. The author believes that it is necessary to organically combine western medicine and Chinese medicine, to see the advantages and shortcomings of each, to absorb the essence of each, and to truly treat tumors in an integrated manner for the benefit of tumor patients.