To determine whether a child’s vomiting is caused by pent-up food or by catching a cold, a comprehensive analysis can be made from the following aspects: 1. Distinguish from medical history inquiries: If the child’s vomiting is caused by pent-up food, the child often has a history of excessive intake of food before vomiting. If the vomiting is caused by cold, the child will often have a cold abdomen or wear too few clothes, etc. 2. If the vomiting is caused by cold, often the abdominal bowel sounds are more hyperactive, the stool is often thin and foamy, and some children may even have a series of symptoms of cold such as nasal congestion, runny nose, sneezing, etc.; 3. Judging from the effect of medication: If the child’s vomiting is caused by pent-up food, after the application of pepsin or Baohe pill and other drugs, the child’s pent-up food will be relieved, and thus the vomiting will also The vomiting will also improve. If the vomiting is caused by cold, the child will have to apply Deng Gui Er Navel Patch or Huo Xiang Zheng Qi Oral Liquid to get good results. If the application of the appropriate medication does not work, it is an indication of improper judgment.