Arachnoid cysts are generally difficult to recover from on their own. Arachnoid cyst is a congenital cystic lesion of the brain, which is a benign cyst. Although it is rarely life-threatening, arachnoid cysts are generally difficult to recover on their own. As the arachnoid cyst grows, it may develop a space-occupying effect and produce compression symptoms on the brain tissue, leading to epilepsy, hemiplegia, and limb sensory impairment. Therefore, once an arachnoid cyst is detected, it is recommended to cooperate with a professional neurosurgeon to complete a series of examinations as soon as possible to clarify the condition, and then consider the need for surgical treatment in conjunction with the results of the examination and clinical symptoms. If the arachnoid cyst has surgical indications, it should be combined with the comprehensive diagnosis and treatment advice of specialized doctors to choose the appropriate surgical treatment and early surgery.