泌尿系感染（UTI）是细菌感染中最常见的类型，是危害人类健康的常见病之一；其病情反复发作，迁延不愈；由无症状性细菌尿至严重的毒血症，无一定界限；各种年龄及性别均可发病，以女性常见；在感染性疾病中，其仅次于上呼吸道感染，占第二位，发病率达1～2％。一般泌尿系感染 Urinary tract infection (UTI) is the most common type of bacterial infection, is one of the common diseases endangering human health; its disease recurrent, persistent unhealed; from asymptomatic bacterial urine to severe toxemia, there is no certain limit ; All kinds of age and gender can be onset, common in women; In infectious diseases, which is second only to upper respiratory tract infection, accounting for the second, the incidence of 1 to 2%. Urinary tract infection