Chemotherapy generally has some side effects, but not all patients have reactions to chemotherapy. There are also some patients who do not have significant reactions, which cannot be considered abnormal and can be considered normal. Chemotherapy is a kind of chemotherapy, which is a common anti-tumor treatment. Chemotherapy may bring some side effects, such as nausea, vomiting, dizziness, headache, and some may have allergic reactions, so antiemetic and allergy prevention drugs will be applied before chemotherapy. If the patient is in good health and can tolerate it, there may be no significant reaction, but this does not necessarily mean that chemotherapy is not effective. Generally, chemotherapy is administered in a course of at least 4-6 courses, and a review is needed after 2-4 courses to assess the efficacy. If the review result shows that the tumor has shrunk or there is no new development, it means that chemotherapy is also effective.