The reason you cannot walk after a bone marrow stem cell transplant for non-Hodgkin’s diffuse large B-cell lymphoma is because the patient’s blood counts and other markers have not fully returned. After receiving bone marrow stem cell transplantation, patients with non-Hodgkin’s diffuse large B-cell lymphoma should decide whether they can exercise and walk according to the degree of recovery. 1. If the hematopoietic function has not fully recovered in the early stage and the blood routine indexes have not returned to normal, strenuous exercise is not allowed and walking is not recommended at this time. This is because the patient may be combined with anemia and thrombocytopenia, which may cause dizziness, chest tightness, shortness of breath and other symptoms. 2. If the patient’s hematopoiesis recovers well and basically returns to normal level, he/she can exercise normally. After bone marrow stem cell transplantation, the indicators such as blood routine will rebound sooner or later, as well as the length of time, varies from person to person, and it depends on the patient’s condition to decide when he/she can exercise and walk. Treatment should be under the guidance of a doctor.