目的：探讨口服肠道超声显影液在结、直肠占位性病变中的应用价值。材料和方法：患者空腹排便后服肠道显影液７０～８０ｍｌ，饮水５００～７００ｍｌ，待结、直肠充盈后，经腹部进行超声检查。结果：共检出息肉样病变５４例，恶性肿瘤８６例，均经肠镜、手术病理证实。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。另外，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、实用等特点，适用于各级医院。 Objective: To explore the application value of oral intestinal ultrasound imaging solution in the occupying lesions of the rectum and rectum. Materials and Methods: The patient took the bowel developing solution of 70-80ml after fasting and defecation, and drinking water of 500-700ml. After the end, the rectum was filled and ultrasound was performed through the abdomen. RESULTS: A total of 54 polypoid lesions were detected and 86 malignant tumors were confirmed by colonoscopy and pathology. Polyps showed a slightly stronger echo in the circle, and the continuous relationship between the intestinal wall at the attachment was normal. The colorectal cancer and the rectal cancer are diverse and can be divided into three types: uplift type, ulcer type, and wall thickness type. 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. In addition, factors that affect the rate and accuracy of ultrasonic detection were also analyzed. Conclusion: Oral ultrasound intestine developing solution is convenient, practical and applicable to hospitals at all levels.