Craniotomy is the treatment of choice for most meningiomas, and current advances in neurosurgical techniques have dramatically reduced the risk of craniotomy for meningiomas. However, there are a variety of intracranial meningiomas, and there are some risks associated with craniotomy for meningioma removal, one of which is heavy bleeding during surgery. The amount of bleeding during meningioma craniotomy is related to a variety of factors, including the location of the tumor base, size, texture, and relationship to surrounding blood vessels. In most meningiomas, bleeding during craniotomy is manageable, and even if there is some bleeding, timely blood transfusion can ensure physiological function without serious consequences. However, there are some meningioma surgeries where bleeding is rapid and relatively large, which can lead to serious consequences such as hypotensive shock if new blood is not replenished in a timely manner during the surgery. Almost all meningioma craniotomies are prepared with a certain amount of blood before surgery so that it can be replenished in time in case there is more bleeding during surgery, but there are some special cases where the amount of blood prepared is limited, and it is even more important to reduce bleeding during surgery in these types of surgeries so that it is not replenished in time when it is needed, which can have serious consequences. The risk of heavy bleeding during meningioma craniotomy is one of the surgical risks. Detailed surgical planning and forethought is needed before meningioma craniotomy to reduce the risk of heavy bleeding during surgery and to speed up the recovery of the patient after surgery.