If fluid is formed after meningioma surgery, hot compress can be applied for observation or puncture and suction treatment. If there is subcutaneous effusion three months after meningioma surgery, if the amount of effusion is not big, it can be absorbed naturally or hot compress with wet towel can be applied to promote the absorption. If the effusion leads to high local tension or the amount of effusion is big and difficult to be absorbed naturally, then go to the hospital and let the professional doctor carry out the puncture suction for the effusion, and apply pressure bandage for a period of time, so as to prevent the formation of effusion again. Subcutaneous effusion after meningioma surgery is a common complication, which may be caused by poor suture of dura mater, peeling off of scalp and skull during craniotomy, resulting in leakage of cerebrospinal fluid into the subcutaneous effusion. It may also be caused by localized fat liquefaction. The main symptoms include headache and dizziness due to the pressure of the effusion. The formation of effusion after meningioma surgery should be promptly consulted and treated under the guidance of physicians to avoid delaying the condition.