1. The Importance of Baby’s Resistance: Babies’ body immunity has not yet fully developed, so their resistance to diseases is relatively weak. Moreover, babies are more susceptible to infections due to their limited diet and lifestyle habits. Therefore, it is very important to improve your baby’s immunity, which can help them cope better with various diseases. 2. Nutritious diet is crucial to enhance the baby’s immunity. Correct diet is the key to enhancing the baby’s immunity.