Chemotherapy toxic side effects are as follows: 1, myelosuppression: low white blood cells and low platelets can be relieved by raising white blood cells and platelets. If patients have severe anemia, red blood cell transfusion can be used to correct the symptoms; 2. nausea, vomiting, spleen and stomach discomfort, abdominal distension, adjusted by eating an easy-to-digest, light diet; 3. constipation: can be relieved by taking laxatives, coarse fiber diet and eating more vegetables and fruits; 4. patients are prone to oral mucosa damage, so they should be encouraged to rinse their mouths more often, preferably with salt water, and can also be combined with traditional Chinese medicine or Chinese medicine to regulate the spleen and stomach to reduce the toxic side effects of chemotherapy.