在儿童保健及小儿眼科工作中，定量评价婴儿的视觉发育非常重要。本文用选择观看法（ｐｒｅｆｅｒｅｎｔｉａｌｌｏｏｋｉｎｇ，简称ＰＬ）对１５４例生后１０－４０周的正常婴儿进行了视力测试。结果表明婴儿生后视力逐渐提高，约在生后３２－４０周左右即可达到０．２００，并发现母乳喂养儿其ＰＬ视力在２４－２９周要高于人工喂养者。建议在儿童保健工作中推广选择观看法，并提倡母乳喂养。 In child care and pediatric ophthalmology, it is important to quantify the visual development of infants. In this paper, preferentiallooking (preferentiallooking, referred to as PL) 154 cases of 10-40 weeks after birth, normal infants were tested for visual acuity. The results showed that the visual acuity gradually increased after birth, about 32-40 weeks after birth can reach 0.200, and found that breastfeeding children with PL vision 24-29 weeks higher than the artificial feeding. It is recommended to promote the opt-in approach in child health and promote breastfeeding.