There are many reasons for children to have runny nose, such as cold, certain diseases, or certain viruses, etc. If you find that your child has a runny nose, you should first determine which cause it is based on the color of the nose, and then carry out the corresponding treatment. Clear nose, if you find that your baby sneezes or has a clear nose, especially in winter, it means that your baby’s lungs have been invaded by cold air and caused by cold, so you need to let your baby drink more hot water and wash his face with hot water to effectively improve the situation of runny nose. White runny nose, if the baby has thick white runny nose, is often the isolated performance of the child’s respiratory tract infection, usually from clear to pus, the runny nose may gradually thicken in the course of the disease, then you need to continue to drink hot water, and depending on the situation, the baby can use medicine. Yellow nasal discharge may indicate a local bacterial infection, so it will be yellow, and yellow nasal discharge also indicates that the disease is a little bit serious, if necessary, you need to give your baby medication. Most of the runny noses in babies are caused by cold and flu. When babies are found to have runny noses, parents should observe carefully to find the cause and treat the symptoms. After the baby gets cold, try to let the baby drink more water to improve their cold tolerance, rather than rushing to use drugs to treat and control.