目的：探索肠道超声显影液在结直肠肿瘤中的应用价值。方法：患者空腹排便后服超声肠道显影液７０－８０ｍｌ，饮水５００～７００ｍｌ，待结直肠充盈后，经腹部进行超声检查。结果：共检出息肉５４例，恶性肿瘤８７例，均经肠镜、手术证实。息肉表现为圆形略强回声，附着处肠壁连续关系正常。结直肠癌表现多样，可分为三型：隆起型、溃疡型和壁厚狭窄型。内部回声有随着瘤体增大，浸润深度增加而逐渐减弱的趋势。超声还可对肿瘤的分期做出判断。本文还对影响超声检出率及准确性的因素进行了分析。结论：口服超声肠道显影液具有方便、快捷、实用等特点，适用于各级医院。 Objective: To explore the application value of intestinal ultrasound imaging solution in colorectal cancer. Methods: After the patients had fasting and defecation, they took ultrasound-intestinal developing solution 70-80ml and drinking water 500-700ml. After the colorectal filling, ultrasound was performed on the abdomen. RESULTS: A total of 54 polyps were detected and 87 malignant tumors were confirmed by colonoscopy and surgery. Polyps showed a slightly stronger echo in the circle, and the continuous relationship between the intestinal wall at the attachment was normal. Colorectal cancer has diverse manifestations and can be divided into three types: uplifted, ulcerated, and narrow-walled. Internal echoes tend to diminish as the tumor size increases and the depth of infiltration increases. Ultrasound can also determine the stage of the tumor. This article also analyzes the factors that affect the rate and accuracy of ultrasonic detection. Conclusion: Oral ultrasound intestine developing solution is convenient, fast, practical and applicable to all levels of hospitals.