The main reason for babies to be infected with the new coronavirus is that their body resistance is low, and when they are exposed to the new coronavirus, their resistance is not able to resist the virus. Because the new coronavirus is susceptible to all people, so in daily life, adults should do a good job of protecting their babies, avoiding public places with large crowds, wearing masks, not going out if not necessary, and developing good habits of washing hands and not using contaminated hands to touch the mouth, eyes, nose and other mucous membrane parts.