应用ＰＡＳ治疗溃疡性结肠炎１６例（Ａ组），口服柳氮磺胺吡啶１６例（Ｂ组）为对照组，治疗前均行纤维结肠镜及病理活检确诊，应用ＰＡＳ２．０加生理盐水２００毫升保留灌肠，总有效率９９．９％，对照组总有效率９３．７％，且有胃肠道反应、头痛、皮疹、白细胞下降及对磺胺过敏者不能治疗等副作用，治疗组为局部用药，无任何副作用，尤其对远端结肠效果更好 16 cases of ulcerative colitis were treated with PAS (group A) and 16 cases of sulfasalazine (group B) were taken as control group. All cases were diagnosed by fiberoptic colonoscopy and pathological biopsy before treatment. PAS 2.0 plus normal saline (200 ml) Retention enema, the total effective rate was 99.9%, 93.7% of the total effective rate of the control group, and gastrointestinal reactions, headache, rash, leukopenia and sulfa allergy who can not treat other side effects, the treatment group for local use, No side effects, especially on the distal colon better