Nausea and vomiting: This is the most common side effect of chemotherapy patients. To avoid or reduce these side effects, you should strictly follow the doctor’s instructions and take the drugs on time, in the right amount and in the right order to reduce the chance of side effects. And should not eat a lot before making chemotherapy. Eat small and frequent meals to avoid excessive bloating of the stomach. Avoid greasy, too sweet and overly flavored food, and drink some cool drinks. If nausea and vomiting still occur, fast temporarily and apply some antiemetic drugs. Constipation, diarrhea: It is due to the destruction of intestinal mucous membrane cells by drugs. For diarrhea: Eat a light diet, ask the doctor to prescribe antidiarrheal agents, and if the diarrhea is severe, intravenous rehydration is needed. For constipation: Take more water, vegetables and fruits or use laxatives. Hair loss: Because the chemical drugs are more likely to destroy cells that divide faster, such as skin and hair cells. Since this side effect will disappear after chemotherapy is stopped, hair will continue to grow again. Therefore, during chemotherapy, you can cut your hair short, avoid excessive washing and blowing or combing, don’t pull your hair when it is wet and use silk essence to moisturize your hair, and wear a wig to improve your appearance if necessary. Lastly, when undergoing chemotherapy, you can sleep on an ice pillow to make the blood vessels in your head constrict and reduce the chance of hair loss. Decreased white blood cells, anemia and bleeding gums or bleeding spots under the skin: Because chemotherapy drugs can destroy the reticuloendothelial system in human bone marrow and inhibit the hematopoietic function of bone marrow. If you experience such symptoms, you should consume high protein and high calorie foods. Avoid bumping and wearing tight-fitting clothes. Use a small toothbrush with soft bristles to reduce irritation of the gums to prevent bleeding of the oral mucosa. If the blood level is below normal, it may be necessary to reduce the dosage or wait until the blood quality is normal.