Etiology and pathogenesis: The internal growth of cancer toxins is the cause of cancer. The symptoms of malignant tumors have been described in the early literature of ancestral medicine, such as “intestinal Qin”, “stone gangrene” and “diaphragm in the middle” in Nei Jing, “accumulation” in Nang Jing, “obstruction in the intestine”, “stone gangrene” and “diaphragm in the middle” in the treatise on the origin of diseases. “accumulation” in Nei Jing, “obstruction”, “stone gangrene” and “stone carbuncle” in The Treatise on the Origin of Diseases, and what later generations called “loss of glory”, “stone boils”, and “kidney rocks”, some of which belong to tumors of the gastrointestinal, uterine, liver, pancreatic and other organs and body surfaces. In terms of pathological factors, most of the medical practitioners in the past generations attributed to stagnant phlegm and dampness, and “Danxi Xinfa” said, “Anyone who has lumps in the upper, middle and lower parts of the body is mostly phlegm.” Malignant tumor is a kind of disease with special nature, which is not exactly the same as general internal diseases. Stagnant phlegm and dampness do exist in the pathogenesis of tumors, but they cannot yet summarize the whole process of cancer pathogenesis. For example, abdominal masses and pain caused by malignant tumors are traditionally classified as obstruction and pain, but in fact, they are different from abdominal masses and pain caused by other diseases in internal medicine, and their treatment by removing blood stasis and eliminating paralysis, regulating qi and relieving pain is often unsatisfactory or even ineffective, and the course of the disease is also very different. Combined with the identification of the disease, the application of drugs that have the effect of clearing heat and detoxifying, such as white flower snake tongue grass, Shu Yang Quan; detoxification of swelling of toadstool, bee; detoxification of pain relief of centipede, whole scorpion; detoxification of dampness of Tu Fu Ling, money white flower snake, etc. to treat cancer tumors, often received certain results. It can be seen that the development of malignant tumor is not only related to stagnant phlegm and dampness, but also has a more important specific pathogenic factor, which is “cancer toxin”. Malignant tumor is related to poisonous evil, and ancient and modern medical doctors have similar understanding. The “Zhongzangjing” says: “Gangrene, carbuncles, sores and toxins are all caused by poison from the five internal organs. It is not a congestion of the Ying and Wei, but also hair.” According to a recent scholar, Yu Rencun, “internal heat and toxicity” is a major cause of cancer. The clinical manifestations are often fever and rapid tumor enlargement. However, the previous authors failed to distinguish the “poison” that causes cancer from the poisonous evil in internal surgery and warm diseases, and only emphasized the pathogenicity of the poisonous evil when the cancer ulcerated, flowed pus, secreted foul odor or was accompanied by fever and pus and blood from dysentery. It is a specific pathogenic factor that causes the occurrence of all malignant tumors. It is a strong pathogenic substance caused by the long-term effects of various pathogenic factors such as six external perversions, seven internal injuries, diet and fatigue on the organism, resulting in blockage of meridians, disharmony of qi and blood, imbalance of internal organs, and accumulation of turbid evil. When it is produced and becomes a new pathogenic factor, the body starts to suffer from malignant tumor and does not necessarily have significant symptoms, but enters the clinical stage when the internal organs fail to compensate for the development of the disease. Therefore, it is said that the internal growth of cancer toxin is the cause of the beginning of malignant tumor. Insufficient positive qi is the internal basis of cancer. Insufficient positive qi in tumor patients has both physiological and pathological reasons. Most of the cancer patients are middle-aged and elderly. As the scripture says, “after 40 years of life, Yang Qi will be half of the body”. After middle and old age, kidney energy is gradually lost and the function of internal organs enters into natural decline, so the positive qi becomes increasingly insufficient. Long-term emotional disorders, anxiety, depression and unhappiness can not only disrupt the flow of qi, but also affect the invigoration of yang qi and damage the liver and spleen, so that the middle jiao is not transported and biochemical sources are lacking. Zheng deficiency is not only the premise of cancer toxicity, but also the basis for determining the development of cancer. If cancer is treated actively, especially after surgery to remove the cancer tumor, timely treatment to support the righteousness, so that the righteousness is strong, it has obvious effect on limiting the spread of cancer toxicity, improving the quality of survival and prolonging the survival period, and even some people are cured by it. Malignant tumor is a deficiency disease. In addition to cancer toxicity, stagnant phlegm and dampness are also very important pathological products, which have been discussed more by previous authors, such as “cancerous tumors are not caused by yin and yang, but by stagnation of blood and phlegm in the five organs.” However, among the many contradictory symptoms, cancer toxin invades and destroys positive qi, and when positive qi is deficient, cancer toxin becomes more rampant. Thus, in a sense, the essence of malignant tumor is the process of cancer toxin rampage and deficiency of positive qi. In clinical practice, due to the different sites of cancer, the differences of damaged internal organs, and the urgency of positive deficiency, the symptoms of cancer show their complexity and diversity, which we need to pay attention to on the basis of grasping the general rules. Treatment principles: 1, blood activation and elimination of stasis method: the main indications are lumps do not disappear after a long time, hard as stone, concave and uneven, lips and tongue purple or petechiae, angry veins, dark skin, patches of rough, skin nail wrong, local tingling, fixed, light day and night, astringent pulse. If one of them is identified as stasis, the method of activating blood circulation and removing stasis can be used at this time, commonly used drugs include: Salvia, Radix Paeoniae, Peach kernel, Safflower, Yujin, Angelica, Boswellia, Myrrh, Chuanxiong, Trigon, etc. Special attention is paid to the fact that the application of blood activating drugs can improve the high blood clotting status of tumor patients and improve microcirculation. or reduce the spread and metastasis. This method can make anti-cancer drugs work better or reduce the spread of metastasis. Those with weak vital energy should be combined with tonic drugs, and should be used with caution for patients with bleeding, excessive menstruation and pregnant women. 2.Phlegm dispersal method: the spleen and lung fluids are not distributed, water and dampness are stopped inside, and the evil heat boils and burns, with the condensation of phlegm, all people with lumps in the middle and lower body are mostly phlegm, so the tumor is related to phlegm stagnation. Most of the malignant tumors conforming to this type of treatment are of giant mass type. Drugs of this type kill cancer cells, are good at dissipating cysts and benign and malignant tumors, and have the effect of reducing or controlling inflammatory secretions of malignant tumors. Commonly used drugs include: azure yellow, kombucha, seaweed, calamus, farinaceous, shellac, sea fushi, etc. 3.Clearing heat and detoxification method: no matter gas stagnation, blood stasis, phlegm and dampness cohesion, or heat and toxicity, or loss of vital energy, can be stasis into evil toxicity in the long run. To clear the heat and detoxify the patient’s physical condition, the Yin deficiency body mainly uses sweet and cold cleansing products, while the damp-heat body uses more bitter and cold detoxification products. In addition, the medicine is cold and easy to hurt the spleen and stomach and yang qi, so it should be used with caution or with spleen-strengthening medicine for those who have weak spleen and stomach, poor appetite, slippery intestine and diarrhea and yang qi deficiency. Commonly used antidotes include half a branch of lotus, white flower snake tongue grass, half a side of lotus, longan, double flower, Gong Ying, ground, bean root, Xia Ku Cao, etc. 4, support the righteousness and cultivate the root method: Qi deficiency, Yang deficiency, the body function decline, blood deficiency, Yin deficiency, the body essence, blood and fluid deficiency. Fostering and replenishing deficiency is to adjust the body’s yin and yang qi and blood, so as to improve the body’s ability to resist tumor and control its development. Deficiency of positive energy is the basic cause of all malignant tumors, and the support of positive energy should run through the whole process of tumor treatment. Loss of appetite and lack of spleen health is a common disease of cancer, coupled with the consumption of cancer, only when the spleen and stomach are healthy and healthy, so that the source of biochemical energy is inexhaustible, can they tolerate the attack of drugs to dispel evil. In malignant tumors, deficiency of both qi and yin is the most common positive deficiency, so the method of benefiting qi and nourishing yin is most commonly used. 5. Treating the untreated disease: First of all, consider the overall symptoms of the patient, collect information through the four diagnoses, combine with modern medical examination, carry out identification and typing, and integrate the diagnosis of tumor with local changes into the identification, which is the biggest difference between Chinese and Western medicine in the understanding of malignant tumor in the diagnosis process. Chinese medicine’s approach to treating tumors before they occur is mainly manifested as follows: (1) Prevention before the disease occurs: the main focus is on tonifying the spleen and kidney. (2) Preventing changes from both diseases. (3) Preventing advancement of already changed. In the early stage of tumor, when the body is still healthy and the righteousness is not deficient, the main focus is on eliminating evil; in the middle stage, both eliminating evil and supporting righteousness; in the late stage, supporting righteousness is the main focus. Through certain treatment, malignant tumor can reverse the deficiency of positive qi. Therefore, what is the main treatment to support positive qi and dispel evil can be continuously adjusted with the treatment. In conclusion, Chinese medicine therapy is one of the main therapies in the clinical treatment of malignant tumors in China, and it is a unique therapy in the clinical tumor treatment in China. Chinese medicine can not only directly fight against tumors, but also improve the immune function of the body, reduce the toxic side effects of radiotherapy and chemotherapy, and improve the liver and kidney function, etc. The efficacy of Chinese medicine in tumor treatment is mainly manifested in the reduction of patients’ conscious symptoms, improvement of physical quality, reduction of recurrence or metastasis rate, stabilization or shrinkage of tumors, and prolongation of survival time. As more people understand and accept Chinese medicine, it will have more application space and achieve greater effect in malignant tumor treatment and bring greater benefits to malignant tumor patients.