Cancer is a type of malignant tumor that generally originates from epithelial tissues. Most of the malignant tumors are called cancer, but there are also a small number of malignant tumors called sarcoma, which are malignant tumors derived from mesenchymal tissues. Cancer is a systemic disease, and if it can be treated surgically, surgery is the main treatment. If the disease is found late and there are multiple metastases, the treatment effect is not good. It can be combined with palliative radiotherapy and systemic chemotherapy to control the development of the disease and prolong the survival period. Because cancer is a systemic disease, it may consume more. Ensuring the intake of nutrients can help improve the body resistance and assist in anti-tumor.