Gastric ulcer stage A2 is usually not serious. Gastric ulcer A2 is the active stage, while the active stage is divided into two disease stages, A1 and A2. Gastric ulcers are peptic ulcers and the ulcers occur in the gastric horns, sinuses, cardia and hiatal hernia. Epigastric pain is the main symptom of this disease. 1. Stage A1 gastric ulcer: the base of the ulcer is covered with white or yellowish-white thick moss, and the surrounding mucosa is congested and edematous. 2. Gastric ulcer stage A2: the surrounding mucosal congestion and edema begin to subside, and a red halo formed by regenerating epithelium appears around the periphery. If the patient appears uncomfortable symptoms suggest that should go to the hospital in time for formal diagnosis and evaluation, under the guidance of the doctor to carry out the relevant treatment, so as to avoid delaying the condition.