患儿男 ,40天。因纳差、面色苍白一月 ,发热、咳嗽十天入院。孕 35周早产。出生体重 2 2 0 0 g。出生时一般情况好。生后牛乳喂养 ,但患儿不愿进食 ,40天共耗奶粉不足1kg。体重不增 ,少哭少动、面色苍白日益加重。家长误认为早产儿表现未引起重视。近十天发热、咳嗽、呼吸增快 Children male, 40 days. Due to anorexia, pale January, fever, cough ten days admitted. 35 weeks pregnant premature birth. Birth weight 2200 g. Good condition at birth. After birth, milk feeding, but children do not want to eat, 40 days total consumption of milk powder less than 1kg. Body weight does not increase, less cry less, pale and worsening. Parents mistake the performance of premature children did not pay attention. Nearly ten days fever, cough, breathing faster