Five-year-old children with low immunity generally do not need special treatment. You can improve your child’s immunity through dietary habits and lifestyle habits. 1. Dietary habits: Diet should be based on balanced nutrition, avoiding the habit of picky eating. Eat more high protein, high vitamin, high fiber, high nutrition diet. Eat less spicy, stimulating, greasy food. 2. Lifestyle habits: avoid staying up late and other bad habits, go to bed early and get up early to maintain a healthy routine. Appropriate sports and exercise to enhance immunity, often outdoor sports, avoid staying indoors for a long time. Children with low immunity are susceptible to bacterial, fungal and viral infections, which induce diseases. So it should be improved in time to enhance the immunity of children.