Brain cysts are treated differently depending on the type of cyst. i. Arachnoid cysts, if they do not cause clinical symptoms, regular follow-up is sufficient; if intracapsular or subdural hemorrhage occurs or acute intracranial pressure increase develops, emergency surgery should be performed; if limited neurological dysfunction occurs, such as motor and visual impairment and recurrent seizures, aggressive surgery should also be performed, and the principle of surgery is to remove as much as possible The principle of surgery is to remove the cyst wall and make the cyst communicate with the subarachnoid space as much as possible. Second, for third ventricular colloid cysts, surgical treatment is advisable because the disease is not sensitive to radiation therapy and cannot control the increase of cysts. Stereotactic cyst puncture and aspiration can be used, which has low surgical risk and good recent results, but the cyst recurrence rate is high. Preference can be given to microsurgery, which has a low recurrence rate and good results after resection. Therefore, according to different cysts their treatment methods are different.