The symptoms of coughing and vomiting may be caused by the following reasons: 1. The child’s violent coughing may stimulate the throat and lead to reflex vomiting. 2. The coughing and vomiting may also be caused by the child’s violent coughing, which excessively jerks the stomach and causes reflux of food in the stomach. 3. When the pressure in the abdomen increases, it leads to reflux of gastric contents, so coughing and vomiting may occur. 4. The child may not be able to cough up sputum, but spit it out by vomiting. When the above symptoms appear, the child should be treated promptly with anti-inflammatory and cough suppressant treatment, and the symptoms of coughing and vomiting will gradually disappear as the inflammation subsides. During this period, parents should encourage the child to drink more water and not to give the child food that is irritating to the throat.