婴幼儿生长发育迅速，新陈代谢旺盛，喂养方法不当，客易引起营养不良。如母乳不足又未及时添加辅食，或骤然断奶导致消化不良，或人工喂养质与量的不足，及长期偏食都可造成婴幼儿营养不良。早产、双胞胎往往营养需要增多，但消化力弱，也可因喂养不当引起营养不良。此外，各 Rapid growth and development of infants and young children, strong metabolism, improper feeding methods, passengers easily lead to malnutrition. If insufficient breast milk and supplementary food in time, or sudden weaning lead to indigestion, or insufficient quality and quantity of artificial feeding, and partial eclipse can cause long-term malnutrition. Premature delivery, twins tend to increase nutritional needs, but weak digestion, but also due to malnutrition caused by improper feeding. In addition, each