It is possible for a child to vomit after being cold. On the one hand, we should carefully search for the exact cause of the child’s vomiting, and on the other hand, we should give the child adequate fluids to avoid dehydration. First of all, the cold can cause the child’s digestion ability to decline, the original can digest the food will also have indigestion, some children will vomit, this situation can give the child adequate warmth, drink some hot water, the back of the diet to eat some good digestive things. In addition, some children will be cold, the body’s resistance will be reduced, the invasion of pathogens, causing the gastrointestinal tract infection, resulting in vomiting occurs. In this case, it depends on what kind of pathogenic infection is present, whether it can continue to be observed or need to go to the hospital. Because a large amount of water is lost during vomiting, children are prone to dehydration in this state. Therefore, no matter what the cause is, it is important to pay attention to the hydration. It is best to take some liquid with salt, such as oral rehydration salt. It is not recommended to drink sugary drinks, which can easily produce gas and cause abdominal distension and discomfort in children. In conclusion, the most important thing is to treat the illness that occurs after a baby vomits after a cold, and it is important to avoid dehydration.