Acute lymphoblastic leukemia is referred to as acute gonorrhea, and chemotherapy for acute gonorrhea is divided into three phases: first, induction of remission, which is 1-2 courses of chemotherapy. Second, consolidation and intensification, for 4-6 courses of chemotherapy. Third, maintenance therapy, which lasts for 2 years. How many courses of chemotherapy does a patient with acute gonorrhea need? It depends on the patient’s condition. If the patient is suitable for hematopoietic stem cell transplantation and is ready for transplantation, 1-2 courses of induced remission will be used, and after complete remission is achieved, the patient will be ready for hematopoietic stem cell transplantation. If the patient is not suitable for hematopoietic stem cell transplantation or refuses to undergo transplantation, 6-8 courses of chemotherapy should be completed in the order of induction of remission and consolidation. Then, according to the patient’s condition, oral drugs will be used to maintain the treatment for 2 years, which is the whole process of chemotherapy for acute gonorrhea.