Bone marrow aspiration is almost harmless, and the site where the bone marrow is extracted is close to the surface of the body, with no important internal organs or blood vessels, so the operation is relatively safe. However, strict attention should be paid to the contraindications, and if any discomfort occurs, one should go to the hospital in time. Bone marrow belongs to hematopoietic tissues and generally has the ability of self-renewal. A small amount of bone marrow fluid extraction, generally speaking, is not harmful, will not cause too much impact on the body. To some extent, it is beneficial to the metabolism of the body’s cells and the bone marrow, and can help to clarify the diagnosis of certain hematologic disorders. The total trauma of bone marrow extraction is a needle-sharp wound, and recovery is faster. Localized skin bruising and pain may occur, but no internal organs are touched or harmed and there are no after-effects. It should be noted that bone marrow aspiration is not recommended for patients with leukemia, women with advanced pregnancy, and coagulation disorders. It is also recommended to take more rest, have a light diet and drink more water after the bone marrow aspiration. If you experience any discomfort, you should go to the hospital for treatment. Bone marrow aspiration should be performed by a licensed physician.