Failure to extract bone marrow from a bone puncture is not a serious condition. This situation can happen in the clinic, often because of the corresponding problems in the operation method, puncture site or the patient himself during the process of bone marrow puncture. For example, during the operation, due to the operator’s own unskillfulness, resulting in the failure of the bone marrow puncture, or in the selection of the puncture point, certain puncture points may have a relatively small amount of bone marrow, which does not puncture and aspirate the bone marrow, or the patient himself has a lack of microcirculatory perfusion, which may lead to the failure of bone marrow aspiration. In this case, the patient does not need to be overly burdened, and the doctor will promptly adjust the relevant examination methods. For example, the site of puncture will be changed or a different puncture method will be used until the bone marrow is aspirated, and then the appropriate examination will be performed. Bone marrow is relatively abundant in the human body and can be aspirated in most cases, so patients do not need to have too much psychological pressure.