Sudden vomiting and stomach pain are usually caused by acute stomach cramps, gastritis, pancreatitis, cholecystitis and other conditions. 1. Acute gastrospasm: Exercise or eating a stimulating meal can lead to spasm of the smooth muscle of the stomach, which can make the patient experience sudden vomiting and stomach pain. Patients need to rest temporarily, if necessary, can follow the doctor’s instructions to apply metoclopramide, pivacurium bromide and other treatments. 2. Gastritis: Acute erosive gastritis, bile reflux gastritis and other conditions can also lead to sudden vomiting and stomach pain, the patient can be treated with acid-suppressing drugs (omeprazole, etc.) and gastrointestinal mucosal protectants (teprenone, etc.) under the guidance of the doctor. 3. Pancreatitis: Pancreatitis, caused by biliary tract diseases and overeating, is typically characterized by pain and discomfort in the upper abdomen, which may be mistaken for stomach pain. In addition to sudden vomiting, symptoms such as fever and chills may also occur. 4. Cholecystitis: Sudden obstruction of stones in the gallbladder may also cause sudden vomiting and stomach pain. You need to choose the right treatment for your condition. Sudden vomiting and stomach pain may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, with the help of the doctor for treatment.