摘要篇首： Pheochromocytoma (PCC) is a catecholamine producing tumor of neuroectodermal origin that is made up of chromaffin cells, and it mostly arises from the adrenal medulla. Extra-adrenal pheochromocytomas occur in about 10% of all cases in adults.1 Its occurrence in the urinary bladder is much rarer, accounting for less than 0.06% of all urinary bladder tumors and less than 1% of all pheochromocytomas.2,3 In 1953, Zimmerman et al4 reported the first case of pheochromocytoma of urinary bladder. So far, the total number of cases of PCC of the bladder is less than 220.5 The definitive treatment of bladder pheochromocytoma is excision with partial cystectomy. Depending on the site and size of the tumor,open partial cystectomy with or without reimplantation of the ureter is generally done. In small lesions, there are anecdotal reports of laparoscopic and transurethral resection done in adults, suggesting the feasibility of a minimally invasive approach in selected cases. However,the approaches for laparoscopic resection were all through transperitoneal route. Here we reported a case of pheochromocytoma of the urinary bladder in a 34-year-old man, in whom pre-peritoneal laparoscopic partial cystectomy was performed.