自1948年1月1日至1956年12月31日天津医学院附属医院儿科住院病人总数为6085人次。其中早产儿共141例,占2.3％强。本文对早产儿的診断标准采用:胚胎月数不滿36周者;胚胎虽足36周,而体重低于2500克者;如初生体重不知,胚胎月数不詳,而身长不足45厘米,胸围不足30厘米者亦列为早产儿,惟此等嬰儿之身长与胸围为入院后测量所得而非初生时之記录。在这141例內,初生体重不足2500克,或已足2500克而胚胎月数不滿36周者。或身长 From January 1, 1948 to December 31, 1956, the total number of pediatric inpatients at the Tianjin Medical College Hospital was 6,085. A total of 141 cases of preterm children, accounting for 2.3% strong. In this paper, the diagnostic criteria for premature children: 36 weeks of embryos less than 36 weeks; although embryos for 36 weeks, while those weighing less than 2,500 grams; such as unknown birth weight, embryonic days unknown, and less than 45 cm in length, bust less than 30 Centimeters are also listed as premature babies. However, the length and bust of these babies are recorded after admission rather than at birth. In these 141 cases, the birth weight of less than 2500 grams, or have been 2500 grams of embryos and the number of months less than 36 weeks. Or length