Patients with gastric mucosa detachment may manifest abdominal pain, nausea and vomiting, dyspepsia and so on. 1. Abdominal pain: patients with gastric mucosa detachment may have pain in the upper abdomen or middle-upper abdomen to the right, the lower part of the sternum and other parts of the pain, manifested as vague pain, distension, burning pain, etc., and the pain radiates to the back, which may cause severe abdominal pain at night. 2. Nausea and vomiting: it is a common manifestation of gastric mucous membrane detachment, and the vomit is mostly undigested food, which will be relieved after the patient vomits, and the pain will be gradually reduced. 3. Dyspepsia: patients with gastric mucosa detachment will have symptoms of dyspepsia such as epigastric fullness and discomfort, loss of appetite, etc. Severe cases of gastric mucosa detachment will have symptoms such as malnutrition, anemia and weight loss. The above situation should be timely to the hospital, under the guidance of the doctor to clarify the diagnosis and targeted treatment, so as not to delay the condition.