Stomach pain and vomiting symptoms may be caused by gastrointestinal inflammation, peptic ulcer, stomach tumor and other diseases, which usually require a visit to the hospital to find the cause before symptomatic treatment. Common causes and treatment 1, gastrointestinal inflammation: including acute gastritis, acute gastroenteritis, caused by overeating or eating unclean food. Patients can show symptoms of stomach pain, nausea, vomiting and other discomfort, while acute gastroenteritis can also be accompanied by abdominal pain, diarrhea and other symptoms. Usually rehydration therapy can be carried out under the guidance of a professional doctor to correct water and electrolyte disorders. For mild cases, oral rehydration can be given, and local heat can be applied to abdominal pain, or drugs to relieve spasm can be used as prescribed by the doctor; 2. Peptic ulcer: It can be divided into gastric ulcer and duodenal ulcer, if it is abdominal pain and vomiting before meals, it may be duodenal ulcer, and if it is related to symptoms after meals, it is gastric ulcer. Generally, proton pump inhibitors and histamine receptor antagonists, such as cimetidine and ranitidine, can be used to inhibit gastric acid secretion, and drugs to protect gastric mucosa, such as aluminum magnesium plus suspension and tiopresidone, etc. are also needed; 3. Stomach tumor: symptoms such as nausea, stomach pain, abdominal pain and black stool usually appear, and timely gastroscopy is needed to clarify the diagnosis and choose endoscopic treatment, laparoscopic treatment or open surgery according to the condition. For advanced gastric cancer patients, chemotherapy can also be used to relieve tumor growth and improve discomfort symptoms. Patients should pay attention to a light diet, avoid overeating and intake of stimulating foods such as chili peppers and onions, eat regularly and quantitatively, and develop good dining habits.