Considering the stage character of the formation of the stomach polyps and various patterns of histomorphologic changes the authors suggest to use polypectomy together with mucousectomy. The operation was carried out upon 38 patients with stomach polyps. The technic of mucousectomy combined with bilateral trunk vagotomy for gastric and duodenal ulcer was devised in the experiments on 62 dogs. This operation was carried out upon 7 patients.