Entering transplantation is the process by which patients who need hematopoietic stem cell transplantation enter the transplantation bin for follow-up treatment of bone marrow transplantation. The treatment for high-risk types of leukemia and severe aplastic anemia is a hematopoietic stem cell transplant. The patient needs to be pretreated during the bone marrow transplantation period, which is a period of low immunity when the bone marrow hematopoietic cells are removed with very strong chemotherapy, but the newly transplanted stem cells are not yet fully implanted, in addition to the use of immunosuppressive drugs to prevent rejection. As the patient’s immunity is low at this time, it is easy to cause infection in the ordinary ward, and it is necessary to enter the sterile ward, which is the so-called into the warehouse, the patient is in an environment with a relatively low bacterial count, so as to avoid all kinds of infections, and it is beneficial to the survival of the hematopoietic stem cells, which will in turn improve the success rate of transplantation. Any discomfort that occurs after the transplantation needs to be reported to the attending physician in a timely manner.