What should I do if my baby has poor immunity?

If a baby has poor immunity, it's important to provide a balanced diet rich in nutrients—especially vitamins A, C, and E—which can help strengthen the immune system. Include plenty of fresh vegetables and fruits. Increase outdoor activities for the baby to get more fresh air, which also boosts immunity. Additionally, you may consider giving the baby appropriate supplements to address any nutritional deficiencies and further enhance their immune function.