When it comes to blood disorders, the most common one we see is probably anemia. There are many causes of anemia, but the one we see most often is iron deficiency anemia. It is usually diagnosed and treated with medication to supplement iron. If it does not improve, it means that there may be other aspects causing the anemia, such as: megaloblastic anemia, aplastic anemia, etc. There are several kinds. It is also possible that there is a problem with the body’s absorption of iron. These are all possibilities. To rule out the possibility, a bone marrow aspiration is necessary. Bone marrow aspiration allows you to see the morphological changes and changes in the composition of the various components and cells in the bone marrow. Thus, the specific cause of the disease can be diagnosed. Bone marrow aspiration is suitable for: 1. diagnosis, differential diagnosis and treatment follow-up of various blood disorders; 2. unexplained increase or decrease in the number of red blood cells, white blood cells, platelets and morphological abnormalities; 3. diagnosis and differential diagnosis of unexplained fever; bone marrow culture and bone marrow smear for parasites can be performed. Bone puncture is not to prove leukemia. Bone aspiration is the most basic diagnostic technique in hematology. It is also necessary. Bone aspiration” is the use of a puncture needle to penetrate the bone marrow cavity and extract a small amount of bone marrow for laboratory testing for diagnostic purposes. Some patients mistakenly believe that the bone marrow fluid extracted during the bone marrow aspiration test will damage the human marrow and hurt the vitality, so they are reluctant to undergo the test, but in fact the bone marrow fluid required for the bone marrow test is very small, usually about 0.1ml, while the total amount of normal bone marrow fluid in the human body is about 2600ml. The total amount of bone marrow fluid extracted during the bone marrow aspiration is insignificant compared to the total amount of bone marrow fluid in the human body. In addition, patients often think that bone marrow aspiration is painful and frightening, but this is not necessary. ”Bone marrow aspiration is not dangerous and does not leave any after-effects. Some diseases, especially some blood diseases, are difficult to diagnose without this test. Even if the bone marrow does not have any lesions, it is still a great reward, because it will not only eliminate the mental burden of blood diseases, but also the pain and possible side effects of unnecessary treatment for the patient and his family.