How to improve immunity for children aged 3-6 years old mostly refers to how children aged 3-6 years old should improve their immunity, which can be improved through vaccination, balanced diet, proper exercise, and oral medication as prescribed by the doctor when necessary. 1. Vaccination: Timely vaccination helps to strengthen the baby’s resistance to prevent infections and other diseases. 2. balanced diet: need to ensure a balanced intake of the three major nutrients, such as sugar, protein and carbohydrates, to ensure that the child’s growth and development needs, usually eat more vegetables and fruits in moderation, do not picky about food. 3. Appropriate exercise: according to the age of the child to choose suitable outdoor activities, such as playing basketball, running and so on. More exercise and sunshine can help the synthesis of vitamin D, which can promote the absorption and utilization of calcium and phosphorus, and can also enhance the resistance. 4. Taking medication: If the baby immunity is low and lack of vitamin A, vitamin D and other trace elements, you can also follow the doctor’s instructions to take medication to supplement, specific medication need to ask the doctor. 3-6 years old children to improve immunity methods are more, if necessary, it is recommended to consult a doctor, choose the appropriate method to improve immunity.