婴儿肥厚性幽门狭窄 (IHPS)是生后最初几周内最需要外科手术的疾病。据报道活产儿发病率为 3∶ 10 0 0。男女比率 3∶ 1～ 6∶ 1。IHPS病因不明 ,遗传是一重要因素。患病后的复发率男女分别为 10 %及 1.5 %～ 2 %。外部环境因素不明。典型发病多见于生后 3周～ 6周 ,3月以上发? Hypertrophic pyloric stenosis (IHPS) in infants is the disease most in need of surgery in the first few weeks of life. It is reported that the incidence of live births is 3:10 0 0. Male to female ratio 3: 1 ~ 6: 1. IHPS etiology is unknown, heredity is an important factor. The prevalence of illness after the onset of male and female were 10% and 1.5% to 2%. External environmental factors unknown. Typical onset more common in postnatal 3 weeks to 6 weeks, more than 3 hair?