Whether a child’s cough is contagious to other babies needs to be analyzed according to the specific circumstances of the disease, if the child’s cough is caused by an infection it can be contagious to other babies, while other causes of the child’s cough may not be contagious to other babies.1. Contagious: A child’s cough that manifests itself due to a cold, such as a viral infection, bacterial infection or mycoplasma infection, can be contagious to other babies. Infections can lead to respiratory tract infections that can be transmitted to other babies through droplet transmission and other means. In addition, coughing in children with tuberculosis caused by Mycobacterium tuberculosis infection is a serious chronic infectious disease and can be transmitted to other babies. 2. Coughs caused by these factors are not contagious and therefore cannot be transmitted to other babies. If your child has a cough, it is recommended that you take your child to the hospital in a timely manner to identify the cause of the cough and provide symptomatic treatment. If the cough is caused by a contagious disease, protective measures should be taken and, if necessary, the child should be isolated at home.