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目的分析急性消化道出血的病因，更好地指导临床诊治。方法分析66例消化道出血患者的病例资料，对其病因进行分析总结。结果59.1％(39/66)位于上消化道；40.9％(27/66)位于下消化道；上消化道出血的病因以消化性溃疡、急性胃黏膜病变、食管胃底静脉曲张破裂和肿瘤常见，分别占46.2％(18/39)、15.4％(6/39)、12.8％(5/39)和7.7％(3/39)；下消化道出血的主要病因是肿瘤和炎症性病变，分别占44.4％(12/27)和22.2％(6/27)。结论急性消化道出血的部位以上消化道多见，上消化道出血的病因以消化性溃疡占首位，而下消化道出血则以肿瘤多见。“,” Objective to analyze the pathogeny of acute gastrointestinal bleeding, to better guide the clinical diagnosis and treatment. Method to analyze the data of 66 cases of patients with gastrointestinal bleeding, and analyze its causes. Results 59.1% (39/66) is located in the upper gastrointestinal tract; 40.9% (27/66) in lower digestive tract; Etiology of upper gastrointestinal bleeding peptic ulcer and acute gastric mucosal lesion, esophageal gastric varices rupture and common tumor, 46.2% (18/39), 15.4% (6/39), 12.8% (5/39) and 7.7% (3/39); Under gastrointestinal bleeding is the main reason of the tumor and inflammatory lesions, respectively accounted for 44.4% (12/27) and 22.2% (6/27). Conclusion acute gastrointestinal bleeding over parts of the digestive tract, etiology of upper gastrointestinal bleeding peptic ulcer accounted for the first place, while the gastrointestinal bleeding in the tumor.