Chinese medicine believes that the human body and the balance between the human body and the nature is a balance of yin and yang, once this balance is broken for various reasons, diseases will arise. Malignant tumors are often caused by the weakness of the body due to the lack of vital energy and the influence of external factors such as the invasion of evil toxins, environmental deterioration, long-term dietary disorders, labor and rest, and emotional and mental disorders. Therefore, for the treatment of tumor patients after surgery and radiotherapy, the purpose is not to kill the tumor cells themselves, but to adjust the biased constitution of yin and yang, so that the tumor loses the platform for generation, recurrence, metastasis and progression and deterioration, thus achieving the purpose of treating tumor. At the same time, malignant tumor is a chronic disease, and its treatment has the characteristics of long treatment period and obvious characteristics of treatment stage compared with other diseases. Therefore, the recurrence and metastasis of tumor patients are closely related to their physical condition, and the adjustment of patients’ physical condition is especially important in the treatment of tumor by TCM. 2.TCM’s understanding of physique “TCM physique theory” is a discipline guided by TCM theory to study the physiological and pathological characteristics of various physiological heat evidence and physiological types of human beings, and to analyze the reflective state of diseases, the nature and development tendency of lesions, so as to guide the prevention, treatment and health rehabilitation of diseases. The physical constitution of Chinese medicine refers to the comprehensive and relatively stable inherent characteristics of the human body in terms of morphological structure, physiological function and psychological state, which are formed on the basis of innate endowment and acquired by the human body in the process of life, and are the human personality characteristics that are adapted to the natural and social environment during the growth and development of human beings. From the point of view of the formation process of physique, first of all, individual physique inherits its own family genetic characteristics, and is a regular process of continuous evolution in the process of growth and development, so it has the characteristic of stability, and at the same time, individual physique is affected by climate, diet, emotion and various social environments, and will make corresponding adaptive changes. The author found that tumor patients can also change to a peaceful constitution through long-term adjustment of Yin deficiency, Qi deficiency, Damp heat, Phlegm dampness, etc. Therefore, the constitution is adjustable, and the use of Chinese medicine to adjust the biased constitution is an important means to prevent the occurrence and deterioration of diseases. The correlation between physical factors and malignant tumors (1) Physical constitution and tumor development In the same environment, tumors occur in some people and not in others, the reason is that different individuals have different physical constitution and different reactivity to the environment. The material basis of physique is the level of qi, blood and fluid of the internal organs of human body, and the difference of physique is due to the difference of composition and function of qi, blood and fluid of internal organs, and the strength and weakness of human body’s positive qi is also determined by the above mentioned basic material. Modern research also shows that the imbalance between oncogenes and oncogenes caused by various external factors is an important cause of tumor development, and the expression of oncogenes varies among different body types. Therefore, physical factors are closely related to tumor development. (2) Body constitution and tumor prognosis The level of human body’s positive energy and the severity of the evil sensation are two important factors to determine the prognosis of the disease. After surgery and radiotherapy, the tumor has been removed, so from the perspective of disease, it is in a tumor-free state and the evil Qi has been removed, so theoretically there is no need for treatment, but 60-70% of patients still have recurrence and metastasis. For patients with advanced tumor, the positive energy and the evil energy compete with each other, and the positive energy is gradually deficient and the evil energy is flourishing. Although the deterioration of tumor at this time has a great relationship with the strength and weakness of the evil energy and whether the treatment is appropriate, the positive energy is flourishing to counteract the evil energy, which can slow down the progress of the disease. Therefore, physical factors are closely related to tumor prognosis, and adjusting body can prevent and delay recurrence and metastasis and improve survival quality. 4.Application of somatic theory in tumor treatment At present, the treatment of malignant tumor is mainly divided into two kinds of adjuvant treatment and palliative treatment, and the treatment means are mainly surgery, radiotherapy, chemotherapy, biological treatment and Chinese medicine treatment. Whether it is adjuvant or palliative treatment, TCM is always involved in it. For patients undergoing surgery and adjuvant radiotherapy, they are already in a tumor-free state clinically, and the purpose of clinical treatment is to prevent recurrence and metastasis. At this time, the use of Chinese medicine is mainly to regulate the body constitution, by adjusting the patient’s unbalanced constitution and improving his or her positive energy, so that the tumor loses the basis of recurrence and metastasis to achieve the goal, and the treatment period is long. The dosage of medicine should be light and the taste of medicine should be small, 15-20 flavors is better, and the application of toxic drugs should be avoided to prevent damage to the body. During the period of body conditioning, if relevant symptoms appear due to the influence of internal and external environment, the prescription can be temporarily changed to mainly treat the symptoms, and the dosage and flavor of the medicine should be increased as needed, so that the symptoms can be corrected within 1-4 weeks to distinguish them from the pathological constitution. At the same time, considering the toxicity of Chinese medicine and the possible toxic side effects caused by long-term use, attention should be paid to the time of taking Chinese medicine. Because 1-3 years after surgery is often the high incidence of tumor recurrence and metastasis, therefore, the author believes that the postoperative application of traditional Chinese medicine should generally be more than 3 years. If the body constitution turns into a calm body constitution during the medication period, consideration can be given to stop taking traditional Chinese medicine, and if the body constitution is still biased after medication, the treatment time can be extended appropriately. For patients with tumor in late palliative treatment, clinical evidence-based treatment should be the main focus, and on the basis of evidence-based treatment, supplemented with body identification treatment. And appropriately add heat-clearing and detoxifying drugs, for example, flea shui and snake tongue herb can be added for lung cancer patients, sophora and tiger stick for colorectal cancer, and cat’s claw herb and piercing sorrel tablets for breast cancer. In this case, we should combine the identification of evidence and body and disease. Because the body constitution is composed of several parts, such as morphological structure, physiological function and psychological factors, patients can be advised to improve their inappropriate diet and lifestyle based on traditional Chinese medicine, and supplemented with food therapy to adjust the body constitution through the bias of food. At the same time, psychological interventions and other methods are used to improve the influence of patients’ bad emotions on their physique.