A 73-year-old man presented to our hospital due to postejaculation gross hematuria and dysuria. Three months after onset, urinary retention occurred repeatedly. Under general anesthesia, cystourethroscopy following drug-induced erection was performed. A solitary sessile lesion with varicosis was found between the verumontanum and external sphincter. The tumor was resected endoscopically and recurrence was not observed during the follow-up period. Histological examination revealed a cavernous hemangioma of the urethra. Urologists should keep in mind that urethral hemangioma can be a cause of hematuria after erection or ejaculation.