The stomach is difficult to vomit nausea, most commonly seen in acute gastroenteritis, gastritis, pancreatitis, etc.. 1. Acute gastroenteritis: it may be infectious acute gastroenteritis, such as viral, bacterial or parasitic infections, or non-infectious acute gastroenteritis, such as drug factors, alcoholism, etc., resulting in severe impairment of gastrointestinal function, which leads to diarrhea, abdominal pain, nausea, vomiting and other symptoms. 2. Gastritis: if the onset of acute gastritis may be due to acute gastritis, such as alcohol or trauma-induced acute gastritis, due to gastric mucosal damage and increased secretion of gastric acid, resulting in vomiting and nausea. 3. Pancreatitis: mostly seen in acute pancreatitis, may be due to long-term alcohol consumption and other reasons, but also may be an acute attack of chronic pancreatitis, patients often appear acute abdominal pain, diarrhea, nausea, vomiting, fever and other symptoms. It is recommended that patients with symptoms of nausea and vomiting should go to the gastroenterology department of the hospital in time to find out the cause and cooperate with the doctor’s treatment.