大承气汤由大黄、厚朴、积实、芒硝组成，功能峻下热结，主要用于治疗阳明腑实证。笔者在临床中运用该方加味治疗胆道蛔虫症、输尿管结石，疗效亦佳，兹举例介绍如下：1胆道蛔虫症陈某，男，11岁。因右上腹阵发性绞痛伴呕吐3天就诊。4天前腹泻2次，次日右上腹阵发性绞痛，时岖 Da Cheng Qi Tang is composed of rhubarb, honokiol, real fruits, and thenardite, and functions as a hot junction. It is mainly used to treat Yangming plutonium. The author in the clinical use of the side modified treatment of biliary ascariasis, ureteral calculi, the effect is also good, hereby examples are described as follows: 1 biliary ascariasis Chen, male, 11 years old. Due to paroxysmal colic in the right upper quadrant with vomiting for 3 days. Two days before diarrhea, paroxysmal colic in the right upper quadrant the next day.