The length of time a benign meningioma of 2 cm can live is mainly related to the surgical procedure and the individual patient’s condition, which should be analyzed on a case-by-case basis and cannot be generalized. If a 2 cm benign meningioma is found, the patient needs to undergo surgery in a timely manner. If the surgery goes smoothly and is clean, and no serious complications occur after surgery, it is equivalent to a cure and life expectancy is the same as normal. If the tumor is deeper or richer in blood flow, it can lead to more difficult surgical resection of meningioma, which may result in corresponding complications or allow residual tumor in the primary site, and the patient may die in the short term due to aggravation of complications. In addition, if the benign tumor continues to grow, it may affect life expectancy. Therefore, patients with benign meningioma 2cm are recommended to go to regular hospital medical oncology department in time, and professional doctors will formulate rationalized treatment plan according to patients’ specific conditions. At the same time, we should pay attention to take medication on time and follow up regularly after surgery.