泌尿系异物是一种人为造成或医源性的疾病。上尿路异物甚为少见,而下尿路尤其是膀胱内异物较多见。近10年我院收治21例下尿路异物病人,现报告如下,并对其诊断和治疗等进行讨论。临床资料本组21例病人,男性17例,女性4例。医源性膀胱胶管异物1例,为73岁男性。病人自己经尿道外口插入异物20例,年龄为10～43岁,平均24.5 Urinary tract foreign body is a man-made or iatrogenic disease. Upper urinary tract foreign body is rare, and lower urinary tract especially bladder foreign body more common. Nearly 10 years admitted to our hospital 21 cases of lower urinary tract foreign body patients, are as follows, and its diagnosis and treatment are discussed. Clinical data 21 patients in this group, 17 males and 4 females. Iatrogenic bladder tube foreign body 1 case, 73-year-old man. The patient himself was inserted through the urethral orifice of foreign body 20 cases, aged 10 to 43 years, an average of 24.5