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为了解联体双胎在我国的发生率及流行病学特征，作者在１９８８～１９９２年期间，采用以医院为单位的整群抽样方法，对全国５００多所医院孕２８周至产后７天的围产儿进行了监测。结果：共监测出联体双胎１０６例，５年围产儿数３２４６４０８，全国平均畸形率为０．３／万。河南、安徽省最高，为０．８／万（Ｐ＜０．０５）；北京市和吉林省最低，为０．１／万（Ｐ＜０．０１）；城镇与乡村比较无显著性差异；女性胎儿的联体双胎畸形率比男性胎儿高２倍多；联体双胎死亡率为９１５‰；产前确诊率３１．１３％。上述结果表明，联体双胎是一种死亡率很高的畸形，在我国其发生率与西方国家相近，更多见于女性，我国的联体双胎产前诊断率低，尚有待提高。
In order to understand the incidence and epidemiological characteristics of conjoined twins in our country, during the period from 1988 to 1992, the author adopted a cluster sampling method with hospitals as the unit, and collected the data of more than 500 hospitals from 28 weeks pregnant to 7 days postpartum Births were monitored. Results: A total of 106 conjoined twins were detected. The number of perinatal children was 5,246,408 in 5 years. The average rate of deformity in China was 0.3 / 10,000. Henan and Anhui Provinces were the highest (0.8 / 10,000) (P <0.05), the lowest was 0.1 / 10,000 (P <0.01) in Beijing and Jilin Provinces, and there was no significant difference between urban and rural areas. Female fetuses twin deformity rate than the male fetus 2 times more; joint twin mortality was 915 ‰; prenatal diagnosis rate of 31.13%. The above results show that the conjoined twins is a deformity with a high mortality rate. In China, its incidence is similar to that in the western countries, and more often seen in women. The prenatal diagnosis rate of the conjoined twins in our country is low and needs to be improved.