If there is no recurrence and no manifestation after fifteen years of acute chemotherapy, it can be regarded as clinically cured, but it does not mean that there is no risk of recurrence, and it is routinely believed that no recurrence after five years of chemotherapy for tumors can be regarded as cured. In the existing clinical studies, some patients still experience recurrence of the disease after 8 to 10 years of treatment. Therefore, in clinical treatment, cure does not mean that there is no possibility of recurrence, and the treatment of any cancer should not be taken lightly. It is suggested that after receiving chemotherapy under the guidance of physicians, patients should pay close attention to the changes in their bodies, go to the hospital for diagnosis and treatment in a timely manner if symptoms appear, and pay attention to regular follow-ups in specialized hospitals after chemotherapy.