Nausea and stomach pain are common symptoms of the digestive system, and the main causes are divided into functional diseases, organic diseases and other diseases, which can be treated symptomatically according to the causative factors.1. Gastrointestinal dysfunction: Cold in the abdomen can lead to gastrointestinal dysfunction, which can be manifested as nausea and vomiting symptoms. Patients need to adjust the diet structure, pay attention to dietary hygiene, do not eat spoiled or contaminated food, eat less or no spicy, stimulating food, pay attention to abdominal warmth. If the symptoms are serious or electrolyte disorders caused by vomiting, patients should go to the hospital and use antiemetic drugs such as chlorpromazine and hydrochlorothiazide and intravenous rehydration as prescribed by the doctor. 2. Organic diseases of the stomach: Gastritis, gastric ulcer, duodenal ulcer, gastroesophageal reflux disease and other gastrointestinal diseases can cause damage to the gastric mucosa, and gastric acid stimulating the damaged mucosa can cause nausea and stomach pain. Obstructive diseases of the gastrointestinal tract, such as pyloric obstruction, obstruct the gastrointestinal tract causing gastrointestinal dilatation, which can lead to stomach pain and nausea. Patients should promptly go to the hospital for examination, and after clarifying the cause, follow medical advice for symptomatic treatment, such as gastritis can be used under the guidance of doctors to inhibit gastric acid secretion, gastric mucosal protective agents, and drugs that promote gastrointestinal motility, such as cimetidine, omeprazole, domperidone, thioglycollate, etc. Pyloric obstruction can be treated by surgical methods such as gastrojejunostomy and major gastrectomy. 3. Other system diseases: Patients with heart attack, cervicogastric syndrome, left lobe liver disease, chronic cholecystitis, pancreatitis or diabetes mellitus, hypokalemia can also cause stomach pain and nausea. Patients can be given high-fiber, easy-to-digest foods such as spinach, celery, low-sugar yogurt, etc. on a daily basis to promote gastrointestinal motility. In case of severe symptoms, drugs such as gastrofacial tablets and ranitidine can be used as prescribed by the doctor to relieve gastrointestinal discomfort.