Reflux gastritis usually refers to the reflux of bile, pancreatic fluid and other contents into the stomach, causing damage to the gastric mucosa and affecting the normal functioning of the stomach, which may result in symptoms such as acid reflux, heartburn, vomiting, vomiting of blood, black stools, abdominal pain, and bloating. If there is bile reflux into the esophagus, stimulating the esophageal mucosa, acid reflux, heartburn and other symptoms may occur. If bile stimulates the gastric mucosa to contract violently, there may be vomiting of yellow-green bile, and if there is bleeding of the gastric mucosa, there may be vomiting of blood, black stools and so on. The refluxed material stimulates the smooth muscle spasm of the gastric mucosa, and abdominal pain may occur. Inflammatory stimulation affects the normal function of the stomach, gastric emptying slows down, poor digestion and absorption of food after eating, abdominal distension may occur. Due to the cause of the disease, individual differences, etc., each patient manifests different symptom manifestation, may also appear other symptoms, should be under the guidance of the doctor to determine the condition, do not blindly judge on their own.