探讨西宁地区上消化道出血的病因分布规律。结论通过内镜检查结果证明,西宁地区引起上消化道出血的原因,慢性浅表性胃炎或慢性萎缩性胃炎伴黏膜散在或片状糜烂出血最为常见,出血量小。其次是胃、十二指肠溃疡,门脉高压症,胃癌等,但出血量大。高原低氧环境影响胃肠道功能,加重胃出血,海拔越高影响越大。 Explore the distribution of etiology of upper gastrointestinal bleeding in Xining area. Conclusion The results of endoscopy confirmed that the causes of upper gastrointestinal bleeding in Xining area, chronic superficial gastritis or chronic atrophic gastritis with mucosal scattered or lamellar erosion bleeding the most common, small amount of bleeding. Followed by stomach, duodenal ulcer, portal hypertension, stomach cancer, etc., but a large amount of bleeding. Plateau hypoxia affects gastrointestinal function and aggravates gastric hemorrhage. The higher the altitude, the greater the impact.