The second chemotherapy session is not necessarily more severe than the first. Different cancer patients undergoing chemotherapy with different chemotherapy regimens will present different adverse effects with each chemotherapy treatment. In some chemotherapy regimens, the adverse effects of the second chemotherapy may be more severe than the first chemotherapy due to the accumulation of drug toxicity in the body. Some patients may also have fewer adverse reactions to the second chemotherapy than to the first chemotherapy because they are already familiar with chemotherapy, are more psychologically adequate, or have taken better precautions. Therefore, clinically, patients are generally allowed to rest for a period of time after the first chemotherapy treatment, during which they should monitor the blood routine and other laboratory indicators, and pay close attention to their own physical condition. The next chemotherapy can only be given when the body indicators are appropriate. So that the second chemotherapy will not aggravate the adverse reaction of chemotherapy, which is even more unfavorable to the body. If the patient is not feeling well during chemotherapy, he should consult the doctor in time and receive appropriate treatment under the doctor’s guidance.