The child often fever suggests that pediatric immunity is relatively low, but also does not rule out that the parents are not properly cared for resulting in the need to improve the child’s immunity, as follows: 1, in the life of a balanced and reasonable diet, ensure adequate sleep, appropriate physical activity. 2, pay attention to micronutrients such as calcium, iron, zinc, and other elements of the supplement as well as reasonable supplementation of vitamin D, daily sunlight is conducive to the child’s skin synthesis, vitamin D is beneficial to calcium absorption. Vitamin D, conducive to the absorption of calcium, conducive to the health of children. 3, in the life of the baby oral lysine vitamin B12 oral solution, astragalus oral solution, splenic aminopeptide oral lyophilized powder, transfer factor oral solution or pidomod oral solution, etc., are conducive to the children to improve immunity of the drugs. Medications and lifestyle habits are adjusted together to improve pediatric immunity.