Due to the changes in natural and social environment and people’s lifestyle, the incidence of malignant tumors has increased significantly in recent years, and almost all tumor patients are taking dietary supplements in addition to conventional surgery, radiotherapy and drug treatment. Dietary supplementation is a method to enhance physical fitness through eating various foods to achieve the purpose of resisting the development of diseases, which is accepted by tumor patients because of its mild and non-toxic side effects. However, due to the lack of understanding of their own constitution and the nature of the food they take, many patients think that “sickness is deficiency, deficiency should be tonic, the more tonic the better”, and often blindly take tonic, which not only cannot achieve the expected purpose, but also may cause the decline of constitution and even the progress of disease due to improper tonic. Chinese medicine believes that the human body and the balance between the human body and nature is a whole of yin and yang, and once this balance is broken for various reasons, diseases will follow, so does the generation of malignant tumors. Chinese medicine treats malignant tumors precisely by using the method of discriminatory treatment, using different properties of Chinese medicine (four qi and five flavors) to adjust this unbalanced relationship between yin and yang to achieve In order to achieve the harmonious state of “yin and yang”, malignant tumors are deprived of the platform for occurrence and growth, so as to achieve the purpose of treating the disease. That is to say, to achieve a state of “harmony” by means of “harmony”, and the use of dietary therapy is also the same, both of which are aimed at the “carrier” of disease growth. To carry out correct and reasonable dietary supplements, first of all, we need to clarify our own physical state, and target the properties of the body: “Yin”, “Yang”, “deficiency”, and “real”. “In order to play a complementary role, we need to choose the right food for our body. “Yin” and “Yang” refer to the two basic functions of the human body. “Yin” refers to the substances and functions of the human body that have the functions of cohesion, nourishment and inhibition. “Yang” refers to the substances and functions of the human body that promote, warm, and excite, etc. They are mutually nourishing and mutually restraining, and are unified in opposition. Deficiency” refers to the state caused by the deficiency of yin or yang, there are “yin deficiency” and “yang deficiency”; “reality” refers to the state of yin or yang hyperactivity, there are “yin deficiency” and “yang deficiency”. The “deficiency” refers to the state of Yin or Yang deficiency, and there are “Yin deficiency” and “Yang deficiency”; “actual” refers to the state of Yin or Yang hyperactivity, and there are “Yin flourishing” and “Yang flourishing”. The human body varies in its constitution due to congenital genetic factors or acquired environment (diet, work environment, emotional changes, etc.), and has different tendencies to imbalance yin and yang, and can have “yin deficiency,” “yang deficiency,” and “yin abundance. “yin-rich” and “yang-rich”. There can even be more complex manifestations such as “Yin and Yang deficiency” and “Qi and Yin deficiency”. The nature of food is also different, and can be divided into four gases and five tastes, namely “cold, hot, warm, cool” and “sour, bitter, sweet, pungent, salty”. According to different constitutions, we should choose the corresponding food to supplement the constitution to achieve the state of “harmony”. The deficient constitution should be supplemented with deficiency, and the solid constitution should be diarrhea, which is what Chinese medicine calls “deficiency should be supplemented, and solid should be diarrhea”. Chinese medicine practitioners evaluate the patient’s physique by observing the patient’s tongue, pulse, urine and stool and the corresponding accompanying symptoms. There are four common types of physique: 1. Yin deficiency physique is mainly due to the decrease of “Yin” function caused by the deficiency of Yin liquid, and at the same time, it can be accompanied by the relative prevalence of “Yang” (the principle of Yin-Yang opposition, Yin deficiency leads to Yang prevalence). Older patients with malignant tumors are mostly of this type of constitution. The main manifestations are: from the tongue image, the tongue body is red and thin, the tongue moss is thin or even no moss, (the normal tongue quality is light red, and the tongue moss is thin and white, like green grass growing on black soil), the pulse is mostly thin and fast, the urine is usually large and dark, the stool is dry and difficult to solve, and there is often “heat” when accompanied by Yang. symptoms, fever but mostly low fever, dry and brown tongue coating. Food characteristics: Patients with this constitution should use foods with strong yin tonic power when taking dietary supplements, such foods are mostly sweet, cool and nourishing, which can nourish yin and generate fluid. Representative foods: Tippi maple, ganoderma lucidum spore powder, snapper, yam, and various vegetables and fruits. Tip: At this time, if the supplementation of warm and hot food will be hot and injure the fluids to aggravate the Yin deficiency. Yang deficiency is mainly caused by the deficiency of the main “Yang” function of the human body, accompanied by the performance of “Yin Sheng”. The main manifestations of these patients are fat tongue, teeth marks on both sides of the tongue due to extrusion of the fat tongue, pale white tongue, thin white or thick greasy tongue coating (when accompanied by yin strength), sunken and slow pulse, large and light colored urine, thin stool. Food characteristics: This kind of body patient should be supplemented with strong Yang food, most of these foods are warm and nourishing. Representative foods: longan meat, lotus seeds, chicken, Chinese yam, various dairy products, etc. Tip: At this time, if you take cold products, it will hurt Yang Qi and aggravate Yang deficiency. Tips: Malignant tumor patients, especially after chemotherapy, are also a common type of physical constitution with symptoms similar to Yang deficiency, but the fear of cold is not obvious, so they should eat foods with qi tonic function, such as ginseng, yam, jujube, etc. Yang Sheng physique is mainly caused by the excess function of “Yang” in the human body, which should be distinguished from “Yin deficiency”. The former should be “diarrhea” and the latter should be “tonic”. Main manifestations: Most of them are bright red or purple-red tongue, dry and yellow tongue coating, dark urine and even yellowish red, constipated stool, high fever, red face and ears, red eyes, irritability, sores on the mouth and tongue, etc. Selecting food characteristics: when choosing tonic food should be selected to have the function of laxative fire, such food taste bitter cold. Representative foods: honeysuckle, wild chrysanthemum, lotus seeds core, mung beans, watermelon, etc. Tip: At this time to supplement warm food such as chili, fried food, etc. will make the symptoms worse. The main reason for this is the accumulation of yin fluid due to the excess function of “yin”, which is mostly manifested as the sign of “dampness”. The main manifestations: the tongue is mostly dark and pale with thick and greasy moss, the amount of urine is sometimes cloudy, the stool is thin and sticky, the limbs are heavy, the head is heavy as a wrap, dizziness and other symptoms of dampness obstruction. Selected food characteristics: the use of more dampness and water effect of food. Representative food: poria, coix seeds, red dates cooked together. Tip: If you eat foods with yin tonic effect at this time, it will help dampness to aggravate the symptoms. Of course, malignant tumor patients have a complex physique, and most of the time, it is not just a simple yin or yang unilateral deficiency or real, especially for patients with advanced malignant tumor, it can be manifested as both yin and yang deficiency, both yin deficiency with red tongue and less moss and yang deficiency with weakness and fear of cold, at this time, yin and yang should be supplemented according to the principle of mutual root of yin and yang, and it can also be manifested as both qi and yin deficiency with red tongue and less moss and weakness and spontaneous sweating. In this case, Qi should be tonified to nourish Yin. There is also the identification of different organs according to their functions. At the same time, the theory of Chinese medicine has a holistic view of the unity of the human body and nature, the state of the human body also shows certain patterns with the change of time, such as spring, the main hair, which is appropriate to eat food with the effect of liver, such as white chrysanthemum in water as a tea drink can regulate the mood, summer dampness and heat, Yin Sheng body patients often feel aggravated symptoms in summer, it is appropriate to eat food with the effect of clearing heat and dampness, such as wild chrysanthemum rice, autumn dryness, should be moistened to supplement In autumn, dryness, should be the main moist tonic, such as pear, lily, etc., winter cold collection, so Chinese medicine often advocate “winter tonic”, nourishing cream is applied in winter. Besides, the tonic is also slightly different according to the region and living environment. In conclusion, human physique is diverse and constantly changing with the changes of various internal and external environments, therefore, malignant tumor patients should take tonic according to the person and time and place, and pay attention to individualization, not to blindly take tonic in general, otherwise it may be counterproductive.