If platelets do not rise 3 months after bone marrow transplantation, it can be regulated by temporary observation, dietary adjustment and life management, etc. If the effect is not obvious, please consult the doctor in time and take medication under the doctor’s guidance. 1. Temporary observation: platelets do not rise for 3 months after bone marrow transplantation, which may be caused by slow cell recovery. If there are no other uncomfortable symptoms, you can continue to observe and have regular checkups. 2. Dietary management: if platelets do not rise or platelet count is lower than normal, patients should eat more high protein, high calorie and easy-to-digest food, such as pork liver, pork ribs, jujube, spinach, beef, etc., and avoid eating too greasy, hard and rough, spicy food. 3. Life management: Daily attention should also be paid to personal care in order to reduce the occurrence of adverse conditions, such as avoiding strenuous exercise, keeping bowel movement, avoiding forceful defecation, violent coughing and increasing the risk of intracranial hemorrhage. At the same time, pay more attention to rest, prevent overwork. 4. Medication: If platelets do not rise continuously or symptoms such as bleeding spots on skin and bleeding gums appear, recombinant human thrombopoietin, recombinant human interleukin-11 and other medicines should be used for treatment under doctor’s guidance, and platelet transfusion can be given if necessary. In order to avoid the risk of bleeding due to low platelet count after bone marrow transplantation, the platelet count should be checked regularly as prescribed by the doctor, and relevant drugs should be used for treatment under the doctor’s guidance.