Aim: To study the clinical features, magnetic resonance image and funtional responsed symptoms of cavernoma on the tentorium cerebellum were treated by rotating gamma knife. Patients and Method: Retrospective study of 87 patients with cavernoma on the tentorium cerebellum were treated by rotating gamma knife from 7/2007 to 10/2014. Results: 44.8 percent of patients 30-50 years of age, male/female: 1,02/1. Common symptoms are headache (73,5 percent), seizures (44,8 percent), memory loss (12.6 percent), vomiting (10.3 percent), 16.1 percent diagnosed randomly. Tumors located in the frontal (35,5 percent), temporal (27.9 percent), parietal (11.8 percent), occipital (10.8 percent), subcortical regions (7.5 percent). 80,7 percent tumors side or