为研究哺乳与哺乳性闭经时间的关系,本文对541对二胎母婴自分娩后7天内至母亲恢复正常月经期间婴儿喂养及相关情况进行了随访研究。结果显示,喂奶次数和时间随产后时间变化不大。产后半年内,婴儿摄食90％以上为母乳,至婴儿一岁,母乳含量仍约70％。开始添加辅食的平均时间为产后153天。产后2周全母乳喂养率为73.4％,产后3月、6月分别约为60％和40％。产后一年半,仍有近80%的母亲部分母乳哺喂孩子。产后61,89,187和369天,母亲恢复月经累计概率分别为0.0150,0.0395,0.2345和0.6820。哺乳性闭经时间平均为282天。结果说明:全母乳喂养和以母乳为主的喂养时间较长和添加辅食较晚的母亲闭经时间较长。产后首次月经的出现是应采用避孕措施的信号。 In order to study the relationship between breastfeeding and nursing amenorrhea time, 541 second-term infants and young infants were investigated from 7 days after delivery until their mothers returned to normal menstruation. The results showed that the frequency and timing of breast feeding did not change much with the time of delivery. Within six months after giving birth, babies consume more than 90% of their breast milk and until the first year of their infancy, the breast milk content is still about 70%. The average time to start adding complementary food was 153 days post partum. Breastfeeding rates were 73.4% at 2 weeks postpartum and about 60% and 40% at March and June postpartum respectively. A year and a half postpartum, there are still nearly 80% of mothers breastfeeding their children. 61,89,187 and 369 postpartum days, the cumulative probability of recovery of the mother were 0.0150,0.0395,0.2345 and 0.6820. Mammary amenorrhea averaging 282 days. The results show that: full breastfeeding and breastfeeding-based feeding longer and complementary feeding later mothers amenorrhea longer. The first postnatal menstruation appears to be a signal of contraceptive use.