The cause of meningioma is not very clear, which may be related to radiation exposure, chemical abuse, head trauma, meningitis and other factors. 1. Radiation irradiation: it is the most common theory nowadays. Radiation irradiation, especially long-term continuous irradiation, will easily interfere with the normal differentiation process of cells, which will result in a kind of abnormal proliferation, and eventually form meningioma. 2. Drug abuse: in many cases, if you are not able to grasp the correct specification of drug use or use a certain kind of drug in large dosage for a long time, it may cause the abnormal state of the patient’s cells, and eventually meningioma will be formed. 3. Head trauma or meningitis: the same may also interfere with the normal cell proliferation and differentiation process to a certain extent, and eventually form meningioma. There may be many other risk factors for the development of meningioma, and it is recommended that patients with meningioma should seek medical treatment in time after discovering the disease and under the guidance of doctors, so as to avoid delaying the disease and causing serious consequences.