Chemotherapy for tumors, or chemotherapy for short, is one of the important means to treat malignant tumors. Tumor patients may have heard that chemotherapy has some adverse reactions before chemotherapy, and they are often worried about the side effects of the treatment, therefore, to do a good job of psychological care before chemotherapy is the first step to take to take good care of chemotherapy patients. Secondly, we should tell patients that some patients may have nausea, vomiting, loss of appetite and other adverse reactions after chemotherapy, so that patients can have a preliminary understanding of the adverse reactions in chemotherapy and be psychologically prepared for them; thirdly, we should tell patients that we can overcome or reduce some adverse reactions in chemotherapy by various medical means. Thirdly, we should tell patients that some adverse reactions in chemotherapy can be overcome or mitigated by various medical means. With the continuous development of medicine, most of the adverse reactions of chemotherapy can be controlled within a safe range by drugs. For example, the new generation of antiemetic anthraxidones can inhibit the vomiting center and have a good antiemetic effect; the birth of human granulocyte colony-stimulating factor (such as Wheal blood, Jiexin, etc.) can effectively treat leukopenia, which have laid a good foundation for chemotherapy, and patients do not need to have too much fear at all. Fourth, during the implementation of chemotherapy, we should pay attention to the various conditions of infusion and injection, such as the speed of infusion and whether there is extravasation from the puncture site. Observe and record the adverse reactions and efficacy of the patient during chemotherapy. Fifth, the patient’s diet care. Chemotherapy patients may have a loss of appetite, aversion to oil, reduced digestive function, etc., should be given a light, good-tasting diet, according to the patient’s usual hobby to make some delicious food, do not too much taboo. Some patients’ families believe that chemotherapy “hurts the body” to give patients every day to eat some high-protein, high-fat fish and meat, turtle, etc., in fact, during chemotherapy patients poor appetite, simply can not eat, even if they can barely eat it is difficult to digest. Therefore, you should start eating easily digestible and less greasy food. After a week or so of rest after chemotherapy, most patients can resume normal diet, and it is not too late to gradually increase nutrition at that time. Finally, it is recommended that tumor patients should go to professional oncology department for chemotherapy, because professional departments are more standardized in designing and implementing chemotherapy programs and have richer clinical experience in dealing with various adverse reactions.