Chemotherapy is a common treatment modality for tumor patients. Due to the adverse reactions caused by chemotherapy drugs, patients may experience nausea, vomiting, loss of appetite, reduction of white blood cells and platelets, damage to liver and kidney functions, reduction of immunity and other adverse reactions during chemotherapy. It is recommended that patients eat more high-quality protein such as milk, eggs, fish, soy products, etc., and more vitamin-rich foods such as fresh vegetables and fruits, etc. After chemotherapy, eat more mushroom foods to improve the immunity of the body, to achieve a diversified diet and balanced nutrition. Avoid eating spicy and stimulating foods.