The baby sun is good for the absorption of calcium, but the summer sun will hurt the baby’s skin, how to solve this contradiction? It is best not to take your baby out in the sun from 10am to 4pm in the summer, as the UV rays are very strong during this time. Even if it is not in the strongest sunshine time to go out, you should choose in the shade, and use the umbrella, and sun hat, etc.. It is best to dress your baby in a long-sleeved, thin shirt or long pants with good ventilation to avoid direct exposure of the skin to sunlight. Vitamin D can be obtained through other means, such as taking oral vitamin AD preparations, adding tuna, milk, eggs and other foods rich in vitamin D to the daily diet. Babies over six months old can use sunscreen for babies and toddlers, using sunscreen products with a sun protection factor of 15-20 on weekdays, and sunscreen products with a sun protection factor of 25-30 for strong sunlight or long outdoor activities. Apply sunscreen products 20-30 minutes before going out, and if you are outdoors for a long time, you need to reapply sunscreen products every 4-5 hours. Once the baby is sunburned, mothers can use a cool towel to give the baby a wet compress, and promptly take the baby to the doctor.