The shortest time for recovery from bone marrow suppression often takes 1-2 weeks, with an average of about 3-6 months, and the recovery from the suppression period needs to vary from person to person. In the case of bone marrow suppression of hematopoiesis after chemotherapy, the time varies for different types of cells, such as granulocytes with a minimum survival time of 6-8 hours, platelets with an average of about 6-7 days, and red blood cells with an average life span of about 120 days. In the process of chemotherapy, the three cell lines, especially the granulocytes and white blood cells are reduced, even if there is bone marrow suppression, generally 1-2 weeks after the end of chemotherapy, some of the better recovery can restore the bone marrow, combined with cellular drugs, strengthen nutrition, re-check the blood routine that there will be changes, blood cells will have different degrees of elevation. We should also pay attention to the prevention of anemia and infection after the end of chemotherapy, which can cause prolongation of the bone marrow suppression period and slow recovery.