Precautions after a bone marrow aspiration include resting, keeping the puncture site clean and clear, preventing infection, and preventing bleeding. Bone marrow aspiration refers to the use of a puncture needle to enter the bone marrow cavity to extract part of the bone marrow for examination, in order to diagnose aplastic anemia, iron-deficiency anemia, leukemia and other blood system diseases, as well as infectious diseases. 1. Rest and recuperation: After the bone marrow puncture, you should pay attention to bed rest to avoid bleeding from the wound. Bone marrow puncture wound is deep, strenuous exercise may cause bleeding, so should avoid strenuous exercise, can lie down and rest for 15 minutes. It is also necessary to stay in bed for another 24 to 48 hours. 2. Keep the puncture site clean: it is necessary to prevent infection for at least 48 hours after the bone puncture. It is forbidden to take a bath within two days after the bone marrow puncture, and change the sterile dressing diligently to keep the wound dry and clean locally to prevent infection. 3. Prevent infection: bleeding, hematoma, infection and other complications may occur after bone marrow aspiration. If there is localized redness and swelling at the puncture site, fever, pain and elevated skin temperature, etc., you should contact your doctor promptly. 4. Prevent bleeding: Bone puncture may puncture the blood vessel, coupled with bone puncture into the needle is relatively deep, prone to post-puncture secondary bleeding, the need for 15 minutes of pressure on the puncture point. It is necessary to compress the puncture point for 15 minutes and closely observe the bleeding situation at the puncture point, and report to the doctor immediately if bleeding is found to continue. Bone marrow aspiration is easy to perform, and recovery is usually good without serious adverse reactions. After bone marrow aspiration, you should strictly follow the doctor’s instructions and do a good job of recovering from the wound. If there are any adverse reactions, contact your doctor promptly.