Failure to extract bone marrow from a bone puncture is not a serious condition. It often occurs clinically because of problems with the method of operation, the puncture site or the patient himself during the procedure of bone marrow puncture. For example, during the operation, the operator himself is not skilled, which leads to the failure of bone marrow aspiration, or when selecting the puncture site, certain puncture sites may have a relatively small amount of bone marrow, which is not punctured and aspirated, or the patient himself has insufficient microcirculatory perfusion, which may lead to the failure of bone marrow aspiration. In such cases, the patient does not need to be psychologically burdened, and the doctor will adjust the relevant examination methods in a timely manner. For example, the puncture site may be changed or a different puncture method may be used until the bone marrow is aspirated and then examined accordingly. Bone marrow is relatively abundant in the human body and can be extracted in most cases, so patients do not need to have too much psychological pressure.