Chemotherapy is becoming increasingly important for malignant tumors. It is a form of treatment in itself to treat the disease and consolidate the effects of treatment, but it also has certain effects on the body and mind. What should be done when side effects occur? 1. Psychological adjustment The disease is physically and mentally traumatic for the patients. For the patients’ mental tension will aggravate the gastrointestinal reactions, it is suggested to play light music and place flowers to divert their attention and thus relieve their nervousness. 2, diet adjustment Eat less and more meals, do not overeat; try to avoid greasy, spicy or too sweet food, drink more warm water, in addition, try to eat less hard food to avoid damage to the mucosa, pay attention to the color and aroma of food to increase the patient’s appetite. Do not stop eating because of stomach discomfort when you have diarrhea, just do not eat greasy or lactose-containing food, and eat low-fiber food (such as bread, boiled fruit or fish, etc.), at this time, more nutrition should be added to avoid excessive dehydration and shock. 3.Adjustment of medication time Gastrointestinal reactions caused by chemotherapy drugs can generally appear after a few hours of medication, and gradually ease after 4-5 days. In order to avoid affecting meals, the time of medication is adjusted, and it is recommended that breakfast is set before medication and dinner is set after medication. When vomiting occurs, clean up the vomit in time and give warm water to rinse the mouth. Side effects such as bone marrow suppression: 1. Always observe the changes of white blood cells, platelets and hemoglobin, closely observe the condition, inform the physician promptly when abnormalities occur, and give drug intervention if necessary. 2. Patients with severe myelosuppression have low resistance and should pay attention to disinfection and isolation to avoid inducing complications; keep beds, bedding and clothes clean and avoid going to crowded places. 3. Keep the oral hygiene clean to prevent co-infection. 3. Warm tips: 1. To avoid affecting the therapeutic effect and adverse reactions, it is recommended that records of long-term or recent medication should be provided to the doctor before chemotherapy (e.g. hypertension medication, diabetes medication, etc.). 2.Hands must be cleaned before and after taking medication, especially after touching the medication; in addition, pills should not be taken directly by hand, but can be taken with the aid of bottle caps or spoons to avoid contaminating the medication. 3.During chemotherapy, you need to follow the doctor’s advice and return to the hospital for regular review.