60 hybrid dogs, divided into 2 groups, were subjected to subtotal gastrectomy in B-I and B-II pattern respectively. 20 weeks later, resection of cardia and fundus ventriculi and the gastric remnant esophagus anastomosis was performed. There were more omentum blood vessel embedments about the gastrojejunostomic and gastroduodenostomic stoma and collateral circulation was plentiful. In 1980, there were 25 patients with cardiac cancer of the gastric stump with an average period of 13 years and 3 months following subtotal gastrectomy and a mean age of 59.1 years. 19 patients were subjected to exploratory thoractomy, 17 resection of cardia and fundus of gastric stump and gastroesophagostomy (9 to tunnel gastroesophagostomy and 8 end-to-side esophagogastrostomy). The largest tumor was 5 cm x 4 cm. Except for a death due to intestinal obstruction following operation, the others attained a good recovery. Resection of cardia and fundus of gastric stump and gastroesophagostomy can be carried out for patients with cardiac cancer for gastric stump, which is in line with the principle of conservation surgery.