该文探讨在1岁以内婴儿的家访调查中，咬哑学语声的延缓出现能否作为诊断听力损害的重要依据。产前产后均无异常的73个足月儿，作为正常听力的婴儿，从二个月起以通信方式参与发声情况的跟踪观察，另有21个系早产儿，出生体重在1400～21009之间，无先天性畸形和产前产后并发症 This article explored whether the delayed appearance of bite dumb language can be used as an important basis for diagnosing hearing impairment in a 1-year-old baby’s home visit survey. The 73 full-term infants who had no abnormalities during the prenatal and postnatal period were normal hearing infants. Two months later they were involved in the follow-up observation of the sounding situation by means of communication. Another 21 preterm infants were born with birth weight between 1400 and 21009 , No congenital malformations and prenatal complications