子宫脱垂多见于经产妇,而且以多胎妇女常见。少女期子宫脱垂实为罕见。笔者通过妇女病普查,发现Ⅲ度子宫脱垂少女患者一例,现报告如下。患者兰某,女性,14岁,未婚,农民。主诉外阴“肿物”将近一年。一年前月经开始来潮3～5/30天,初潮后的第三个月,发现阴门有鸡蛋大“肿物”,后渐渐增大如拳头,白天脱出,夜间缩回。肿物出现后行动不便,并自感腰胀痛,疑为外阴长“脓疮”妇检外阴发育正常,未婚型,阴毛稀 Uterine prolapse more common in the maternal, and more common in multiple births. Maiden uterine prolapse is rare. The author passed the general survey of women’s disease and found a third case of uterine prolapse girls, now report as follows. Patient Lan, female, 14 years old, unmarried, peasant. Vulva complaints of “tumor” for nearly a year. A year ago, menstrual cramps 3 to 5/30 days, the third month after menarche, found that there is a large egg in the vulva “mass”, then gradually increase, such as fist, prolapse during the day, night retraction. Mass movement appears inconvenience, and since the waist pain, suspected genital long “abscess” vulva vulva development is normal, unmarried type, pubic hair thin