Whether meningioma 5x6mm is serious or not is mainly based on the specific clinical symptoms for comprehensive judgment, if there is no symptom, it is not serious in itself; if it causes compression to the surrounding tissues or causes obvious abnormalities of neurological function, the condition will be relatively serious. 1. The size of the lesion itself is not large, and it does not cause obvious pressure symptoms, so the incidental discovery does not belong to a serious condition, and can be reviewed regularly to observe the changes. 2. If the location of the lesion is special, such as adjacent to the optic nerve, causing pressure on the adjacent nerves, causing obvious abnormalities in nerve function, or causing local tissue destruction, it is a relatively serious condition and requires surgical resection. Specific conditions must be combined with clinical symptoms to make a comprehensive judgment, the patient should be under the guidance of the clinician for standardized treatment, do not be negligent, so as not to delay or aggravate the condition.