With the incidence of malignant tumors increasing year by year, the number of people suffering from tumors is increasing, and chemotherapy is a process that most tumor patients go through. Although chemotherapy can control the development of tumor, the damage to the normal tissues of human body is also the most worrying issue for patients. Let’s talk about how to reduce the toxic side effects during chemotherapy through Chinese medicine treatment. According to TCM, chemotherapy drugs are very toxic and damage the vital energy, resulting in dysfunction of internal organs, such as nausea and vomiting due to damage of spleen and stomach, weakness due to damage of vital energy, easy to catch cold and so on. According to Chinese medicine, during chemotherapy, patients should have a light and high-protein diet. If nausea and vomiting occur, rice, chicken naijin, jiao malt, hawthorn and yam can be used to cook a small amount of porridge and take it frequently, which can stimulate the vital energy and enhance the function of the spleen and stomach. If weakness is obvious, use Astragalus, Ganoderma lucidum, Lycium barbarum, Radix et Rhizoma codonopsis, and Ocimum sanctum to stew the soup, remove the oil and take the soup, and then cook fine noodles in this soup. Patients should pay attention to avoid going to crowded places to avoid catching a cold. Light activities such as walking are feasible to prevent strenuous exercise to avoid damaging positive energy. However, care should be taken not to be absolutely bedridden.