２４例颅内蛛网膜囊肿多为原发性，少数为继发性，症状本身无特征性．认为术中应尽量切除囊壁，充分建立囊腔与周围蛛网膜下池疏通是手术成功，防止复发的关键．同时要严密缝合硬膜，防止切口脑脊液漏． 24 cases of intracranial arachnoid cyst mostly primary, a few secondary, the symptom itself is characteristic. That should be removed intraoperative resection of the cyst wall, and to establish a sufficient drainage around the cyst and the subarachnoid pool is a successful operation to prevent the recurrence of the key. At the same time to close the dura mater to prevent leakage of cerebrospinal fluid incision.