Abstract: Objective: To study the diagnosis and treatment of spontaneous rupture of renal hamartoma.Methods: Ten cases of renal hamartoma rupture were received B ultrasound and CT scan,and 7 of them received contrast enhancement computerized tomography.All the 10 cases were performed nephrectomy.Results: All the cases were recovered well after operation.Nine cases were confirmed to be renal hamartoma by pathology after operation and 1 case proved to be renal hamartoma with partial canceration.Conclusions: B ultrasound and CT scan are effective and simple means to make final diagnosis of renal hamartoma.The main therapy is nephrectomy,and sometimes nephron-sparing surgery can be adopted.