The causes of water vomiting in children include the following: first, symptoms caused by stomach cold in infants. If the child is dehydrated due to stomach cold and the water is mainly white in color, the child can be treated by warming the middle of the body to disperse the cold and stop vomiting, which can be treated by applying Xiao Jian Zhong Tang or Li Zhong Wan. Secondly, children with stomach heat may suffer from symptoms. If the vomiting is caused by stomach heat, the child will vomit yellow water and the tongue will be red. If the child’s dehydration is more than severe, he or she should also go to the gastroenterology department of the Children’s Hospital to rule out problems such as digestive tract abnormalities.