全国精神病流行学调研协作组,在甘肃省永登县苦水公社大路二队随机抽样进行精神卫生调查时,遇到两起近亲婚配者,一起为姑表亲,生有一子一女,长女为痴愚（中度精神发育障碍）;按TCD—9,可归于重度。一起为姨表亲,生有三女一子,其中第三子与第四女皆为对称性并指畸形,今报导如下。 National Psychiatric Epidemiology Research Collaboration Group, Gansu Province, Yongdeng County, Ku Shunshe commune Road, a random sample of mental health survey, met two inbred marriage, together as a cousin, gave birth to a son and a daughter, eldest daughter is a foolish (Moderate mental retardation); TCD-9, attributable to severe. Aunt cousin together, born three women and one child, of which the third child and the fourth woman are symmetrical and refers to deformity, this report is as follows.