Possible sequelae of urethral stone surgery: First, pain in the urethra within a short period of time, mostly related to the mucosa of the urethra not completely healed. The pain lasts for about 72 hours and may disappear after the mucosa is completely healed. Second, hematuria, when the mucosa is not healed, there may be bleeding mixed in the urine, manifested as hematuria, with the healing of the mucosa, the need for urine can disappear. Third, urethral stricture, if the stone stays too long, causing local mucous membrane breakage, the healing process may form a scar, and cause urethral stricture, the patient appears poor urination or urinary effort, thin urine line, etc., need to carry out urethroscopy to determine. Fourth, stone residue, such as a large stone volume or hard density, usually a phase of surgery can not completely remove the stone, then may need to be staged surgery, will cause the stone residue in the urethra. Fifth, urethral injury, the stone and urethral mucosa adhesion is too tight, then in the process of removal caused damage to the urethral mucosa, in serious cases can appear urethral fistula.