：Objective To avoid megaloblastic anemia due to a deficiency of the intrinsic factor and syndrome after proximal margin subtotal gastrectomy or total gastrectomy in highly situated gastric ulcer or gastric carcinoma. Methods The upper edge of the resected line is individually designed that it fits the location and character of the lesion. By this method some of the proximal gastric wall is preserved，and upper gastrointestinal wall reconstructed with plastic suture. Results We practiced this modified technic clinically in 34 patients with satisfactory results (following-up 100%). Conclusion The complications of proximal margin subtotal gastrectomy or total gastrectomy is reduced by irregular subtotal gastrectomy.