The care of low birth weight infants is very important, the care methods are as follows: 1, after birth must be warm, because the loss of body temperature will make newborns appear hypothermic poor circulation, so it is very important to keep warm; 2, adhere to breastfeeding, breast milk is very important for all newborns, breast milk is more balanced nutrients, suitable for low weight children to achieve more balanced growth, must be opened as soon as possible to let the child adapt to Breastfeeding; 3. After discharge from the hospital, the height, head circumference, weight and other indicators must be monitored regularly to ensure that the child has a normal growth rate and prevent its weight, length and head circumference from growing too fast, which is beneficial to the subsequent growth and development assessment. Low weight infants are prone to respiratory and digestive system diseases, so after 3-6 months of life, special attention must be paid to the feeding of small children and the manifestation of respiratory system diseases.