本文总结了二个单位六年共收治30例儿童颅内蛛网膜囊肿（I．A．C），其中幕上24例，幕下6例，原发20例，续发10例，单发24例，多发6例。30例I．A．C中16例采用显微手术行囊肿全切除。其余14例行直视下大部分切除，并行囊肿-脑室、脑池、腹腔分流术。总有效率93．3％，死亡率6．7％。并对其病因、发病机理、手术方法的选择提出讨论。 This article summarizes the two units were treated for a total of 30 cases of children with intracranial arachnoid cysts (I.A.C) in six years, of which 24 were on the screen, 6 under the screen, 20 cases of primary, 10 cases of continued, single 24 cases , Multiple in 6 cases. 30 cases A. C in 16 cases underwent microsurgical cyst excision. The remaining 14 cases underwent most of the resection under direct vision, parallel cysts - ventricle, cerebral pool, peritoneal shunt. The total efficiency of 93.3%, the mortality rate of 6.7%. And its etiology, pathogenesis, surgical options to discuss.