目的　分析血管造影阴性结果的原因 ,提高消化道出血诊断的阳性率。方法　 30例消化道出血患者 ,男 2 4例 ,女 6例 ,年龄 14 72岁 ,根据病情选择及超选择性腹腔动脉、肠系膜上动脉及肠系膜下动脉造影。结果　 30例中阳性发现 18例 ,均经临床、手术及病理证实 ,阳性率 6 0 %。 12例为阴性结果 ,原因分析显示与病情急缓、出血量多少、出血部位、临床用药与否及造影方法等因素密切相关。结论　密切结合临床、选择合适病例及出血时机、改进检查方法是提高诊断阳性率的关键 Objective To analyze the causes of negative results of angiography and improve the positive rate of diagnosis of gastrointestinal bleeding. Methods Thirty patients with gastrointestinal bleeding, 24 males and 6 females, aged 14.72 years, were selected according to their condition and super selective celiac artery, superior mesenteric artery and inferior mesenteric artery. Results Of the 30 cases, 18 were positive, all of which were clinically, surgically and pathologically confirmed, with a positive rate of 60%. 12 cases were negative results, analysis of the cause and the rapid onset of illness, how much bleeding, bleeding sites, clinical medication or not and angiography methods and other factors are closely related. Conclusion Closely combined with clinical, select the appropriate cases and bleeding timing, improve the inspection method is to improve the diagnostic accuracy of the key