The white moss covering the surface of stomach is the necrotic material on the surface of gastric mucosa, which is often caused by gastric ulcer, and the main treatments are medication, surgical resection and so on. 1. Drug treatment: Because of the large individual differences, it is necessary to choose the appropriate drugs under the guidance of the doctor. The removal of Helicobacter pylori can be treated with quadruple therapy, a proton pump inhibitor plus two antibiotics and bismuth potassium citrate. Proton pump inhibitors such as omeprazole can effectively inhibit gastric acid secretion and reduce gastric acid concentration. Commonly used antibiotic drugs include amoxicillin and furazolidone. 2. Surgical treatment: If the effect of conservative treatment is poor, it can be treated by surgical resection. The poor effect of medication can be treated with vascular intervention, and in severe cases, the ulcer site can be surgically removed. When the patient is not feeling well, he should go to the hospital immediately.