In the whole treatment process, the timing of drug administration, chemotherapy program, the choice of drug type, dose and usage, the application of immune support therapy and the prevention and treatment of side effects play a pivotal role in whether chemotherapy can be carried out smoothly and the effect of chemotherapy, otherwise it is likely that not only the therapeutic effect will not be achieved but also the immune system of the patient will suffer a fatal blow and die. Otherwise, it is likely to not only fail to achieve the therapeutic effect but also make the patient’s immune system suffer a fatal blow and even accelerate death. Therefore, patients who need to do chemotherapy must go to oncology hospital for consultation. 2. The exercise care during chemotherapy should be determined according to the strength of the drug reaction, and the strength of the organism should be protected. On the day of chemotherapy, you should try to rest more and eat lightly. According to the physical condition can be appropriate walking to increase appetite, such as the emergence of obvious severe side effects, should be bed rest, wait for the situation to improve and then do appropriate exercise according to the physical condition, do not exercise too much, so that physical strength decline. 3, after the end of chemotherapy because the body needs to gradually adjust, physical strength needs to gradually recover, so the intensity of exercise should be gradual, grasp the appropriate degree, do some exercise within reach, such as playing tai chi, walking, qigong, climbing, swimming, etc., to avoid strenuous exercise, so that the body resistance to decline, leading to disease deterioration. 4. Long-term follow-up after the course of treatment: Because chemotherapy drugs can kill cancer cells, but they also have certain damage to certain normal tissues and organs of human body. Some antitumor drugs have accumulated toxicity (Adriamycin), and the rate and degree of toxic side effects increase significantly with the accumulation of dose; some chemotherapy drugs have long-term toxic effects. The purpose of post-chemotherapy follow-up is to observe and evaluate the efficacy of chemotherapy, so as to adjust the drugs and dose as well as the treatment course, improve the remission rate and reduce the occurrence of recurrence and metastasis. Therefore, follow-up of chemotherapy is necessary and is an important part of the treatment process. 5.Multidrug resistance of chemotherapy: At present, chemotherapy is an anti-tumor method mainly based on adjuvant therapy, and there are many problems that cannot be solved yet, among which multidrug resistance is one of the most important factors affecting the therapeutic effect. There are two major types of multidrug resistance phenomena in tumor cells: intrinsic (already inherent without exposure to drugs) and acquired (arising after exposure to drugs). The importance of the first course of chemotherapy lies in the better sensitivity of tumor cells to antitumor-drugs and the ease of obtaining better efficacy, and the determination of the regimen and dose intensity of the first course of chemotherapy is also a factor that directly affects the efficacy. Secondly, the dose intensity of drugs is mostly related to the effect, and the reasonable combination of drugs can hinder the formation of tumor cell resistance and improve the efficacy. Therefore, we should attach great importance to the first chemotherapy, and should not casually increase or decrease the dose intensity, shorten or extend the chemotherapy gap, and follow a reasonable comprehensive treatment plan to achieve better results. 6.Course of chemotherapy: The question of how many courses of chemotherapy should be used cannot be generalized. Each tumor patient has its own characteristics, and the size, type, location and metastasis of tumor are different, so chemotherapy for tumor has individual characteristics. According to different situations, drugs are selected, treatment cycles and durations are determined, and certain routes of administration are adopted. Generally, each course of treatment includes 2~3 cycles, each cycle is 3~4 weeks. After completing one course of chemotherapy, let the body get recovered and then carry out the second course of treatment. After getting complete remission (tumor completely disappears and maintained for more than 4 weeks), another 1~2 cycles of chemotherapy will be given, and regular follow-ups in hospital must be conducted.