Objective: To explore the surgical treatment of hypervascular acoustic tumor (HAT).Methods: In past ten years (1975-1985) there were 90 patients with unilateral acoustic tumors were treated by surgery.Among them (4 cases of HAT and 86 cases of nonhypervascular acoustic tumors,NHATs) were retrospectively reviewed and clinical characteristics,radiological and surgical finding were compared.Results: HATs presented at a younger age than NHATs (28±10 vs.54±17 years old)(P＜0.01).MRI showed that HATs was solid,without tumor cyst,and larger than NHATs significantly (P＜0.05).The surface of HATs consistently showed multiple flow voids representing large draining veins.The characteristic angiographical findings of HATs were extensive tumor vessels,tumor stains and early filling of draining veins; Vertebrobasilar arteries supplied HATs.The authors preferred the control hypotension anaesthesia to remove HATs and got total resection of 4 cases of HATs successfully.No patients has needed transfusion or suffered any Other complications after operation.Conclusion: HATs was a solid tumor presented at young.Angiographical findings may provide characteristic manifestation,and could be managed by control hypertension in one-stage surgical approach.