时间优生优育学是近年国内外医学研究的热门学科之一,本文介绍了这方面的一些观点,供读者参考。研究表明,孕妇年龄小于24岁组,新生儿死亡率为113.5‰而25至29岁组只为26.2‰;先天畸形发生率。孕妇年龄小于20岁组为1.2%。而25至29岁组仅为O.8%。联合国的一份资料指出,妇女的有效生育年龄是20至35岁。在此期间,死胎率低、成活率高。另有 Time eugenics is one of the popular subjects in medical research at home and abroad in recent years. This article introduces some of the views in this area for readers’ reference. Studies have shown that pregnant women younger than 24 years of age group, neonatal mortality was 113.5 ‰ and 25 to 29 years old group was only 26.2 ‰; congenital malformations. Pregnant women less than 20 years old group was 1.2%. Compared to just O.8% for the 25-29 age group. According to a United Nations source, the effective childbearing age for women is 20 to 35 years old. During this period, the stillbirth rate is low and the survival rate is high. Otherwise