The cases in the treatment group received high oxygen and Xi-Lei-San while the cases in the control group were treated lnly with rubiazol I.

• 治疗组用高压氧的同时合用锡类散灌肠，对照组口服偶氮磺胺嘧啶，疗程均4周，比较纤维结肠镜下改变。