Currently, the morbidity and mortality of tumors are increasing year by year, and have become one of the most serious diseases threatening human health. Despite the use of multidisciplinary and comprehensive treatment methods in clinical practice, the efficacy is still not satisfactory. Nowadays, people are more and more deeply aware of the importance of Chinese medicine in the process of tumor prevention and treatment, and have taken Chinese medicine as one of the important methods to treat tumors. Once cancer is diagnosed, most patients and family members immediately think of surgery and hate to remove or destroy tumor tissues immediately; or adopt the method of surgery-radiotherapy-chemotherapy step-by-step elimination system. Generally speaking, patients and family members will try Chinese medicine only when the cancer disease has reached an advanced stage and western medical treatment is difficult to obtain the desired effect. They generally believe that “TCM treatment is only suitable for advanced cancer patients who cannot undergo surgery, radiotherapy or chemotherapy” and have the mentality of “treating a dead horse as a living horse”. In fact, this is a misunderstanding of TCM treatment for cancer by patients and their families. Studies have shown that TCM is another important treatment method for cancer in addition to surgery, radiotherapy, chemotherapy and targeted therapy. Surgery, radiotherapy and chemotherapy are treatments aimed at destroying tumors or reducing tumor load, which can alleviate the disease to a certain extent, but the toxic side effects cannot be ignored. Surgery and radiotherapy can deplete the vital energy of human body; while chemotherapy is a kind of “enemy-me-differentiated” treatment, which kills the tumor cells and also kills the normal cells of human body, with obvious toxic side effects. Even if the tumor can be controlled and shrunk in the near future, the treatment itself brings about the destruction of the body’s resistance (righteousness) to a large extent, and often “the tumor is removed and the person dies”, so it is difficult to achieve satisfactory long-term results. The Yellow Emperor’s Classic of Internal Medicine points out: “To treat a large poison, remove six of ten; to treat a regular poison, remove seven of ten; to treat a small poison, remove eight of ten; to treat a non-poisonous disease, remove nine of ten ……. It suggests that the treatment of cancer should not just attack the evil and avoid over-treatment. At present, the mainstream method of treating cancer in Chinese medicine is to “help the righteousness to cure cancer”. The formation of cancer is mainly due to the deficiency of positive qi and the dysfunction of internal organs, so that the evil toxins take advantage of the deficiency and accumulate in the meridians and internal organs, resulting in the dysregulation of yin and yang of the body and the dysfunction of qi and blood, leading to the mutual agglomeration of qi stagnation, blood stasis, phlegm condensation and toxicity, and the formation of tumor over time. The method of “supporting the righteousness” means regulating the body’s yin and yang, qi and blood, as well as the physiological functions of meridians and viscera, so as to give full play to the body’s inherent ability to resist diseases. The combination of Chinese medicine with surgery, radiotherapy or chemotherapy can precisely complement each other and enhance the efficacy of treatment. By nourishing the spleen and stomach, Chinese medicine can improve the patient’s constitution, improve the bone hematopoietic function, such as raising the white blood cell count, and reduce the adverse effects of surgery, radiotherapy, chemotherapy and other therapies, thus giving cancer patients the opportunity to receive surgery, radiotherapy, chemotherapy and other therapies, and helping them to complete the whole course of treatment more smoothly. Some of the drugs used to help cancer patients have the effect of killing cancer cells, or have the effect of increasing the effectiveness of radiotherapy and chemotherapy, that is, “poison” attacking evil. The so-called “poisonous drugs” attacking evil are not toxic in the general sense, but drugs with yin and yang bias. Cancer is caused by the imbalance of yin and yang, so the treatment of cancer requires the use of drugs with yin and yang bias to correct the imbalance of yin and yang in the human body, and to promote the body to return to the harmonious state of yin and yang with the four properties of drugs: cold, hot, warm and cool. Clinical practice also confirms that TCM can participate in the whole cancer treatment process. If a patient has indications for surgery and needs further radiotherapy and chemotherapy, then radiotherapy and chemotherapy after surgery can be effective. Then, during the post-surgery radiotherapy and chemotherapy period, doctors will adopt the methods of benefiting qi and nourishing blood, harmonizing spleen and stomach to reduce the damage of radiotherapy and chemotherapy to patients; after radiotherapy and chemotherapy, in order to prevent tumor recurrence and metastasis, doctors will focus on both supporting and eliminating evil to make the evil go away and recover. Chinese medicine can be used not only for cancer patients with different clinical stages, but also for cancer patients with different types of diseases. In clinical application, based on the principle of “diagnosis and treatment” and grasping the strengths and weaknesses of qi, blood and yin of the patient’s internal organs, TCM practitioners should consider the clinical stage of the tumor and the current Western medical treatment methods and formulate a “tailor-made” treatment plan for each patient. For example, the treatment of lung cancer by “benefiting Qi and nourishing Yin”, stomach cancer by “strengthening the spleen”, breast cancer by “nourishing Yin and warming the kidneys and regulating the flushing of the body”, etc. Through TCM interventions, the internal environment in which the tumor survives can be changed. On the one hand, it inhibits the growth of tumor and adjusts the yin and yang of human body to a harmonious state; on the other hand, it improves the quality and prolongs the survival time of patients. In a word, Chinese medicine cancer treatment guided by the academic idea of “helping to cure cancer” has the efficacy of stabilizing or shrinking the tumor, improving the patient’s symptoms, improving the quality of life and prolonging the survival period. Therefore, cancer patients and their family members should not think of Chinese medicine only when they are at the end of their rope, but should apply Chinese medicine to treat cancer as early as possible under the guidance of Chinese medicine practitioners.