本文用随机抽样的方法对象山半岛,海岛居民进行近亲婚配的遗传学调查,共一镇三乡30村30960人。查有15种近亲类型,近婚率2.03％,F为11.25×10~-4,其中三级亲族近婚率占近亲中82.9％。近亲,非近亲子女20岁前死亡率分别为7.82％和5.50％;自然流产率为2％和0.66％;遗传、先天畸形患病率为7.31％和1.41％,共有64个病种398名患者。两组间有显著性差异,据此认为:近亲结婚后代的有害遗传效应同F值有密切关系。 This article uses a random sample of objects Shan Peninsula, island residents inquisition genetic survey, a total of 30,960 people in 30 villages and three townships. There were 15 kinds of kinship types. The rate of near marriage was 2.03%, F was 11.25 × 10 -4, of which, the rate of third-degree kinship was 82.9%. Close relatives and non-close relatives of women before the age of 20 mortality were 7.82% and 5.50%; spontaneous abortion rates were 2% and 0.66%; genetic prevalence of congenital malformations was 7.31% and 1.41%, a total of 64 diseases 398 patients . Significant differences between the two groups, according to the view that: offspring of married offspring of the harmful genetic effects are closely related with the F value.