Stomach pain and vomiting may be related to gastrointestinal diseases, gallbladder diseases, appendix diseases, etc., which need to consult a doctor in time and be identified by a professional doctor. 1. Gastrointestinal diseases: such as acute gastroenteritis, due to unclean diet may cause the gastrointestinal tract to be attacked by bacteria and other pathogens, resulting in abdominal pain, vomiting and other symptoms. 2. Gallbladder diseases: such as gallstones, if the gallstones block the bile duct, it can lead to abdominal pain, vomiting symptoms. 3. Appendix disease: such as acute appendicitis, the common symptoms are metastatic right lower abdominal pain, nausea, vomiting and so on. It is recommended to go to the hospital in time when the above symptoms appear, to clarify the cause of the disease under the guidance of professional physicians and standardize the treatment, so as not to delay the condition.