In jumbogroup A, 144 rats were randomly divided into 3 groups further, and different methods were used to induce peritoneal adhesions in each group while in the experiment group the wounded processus vermiformis was coated with chitosan gel before it was put back into the abdominal cavity. A组144只随机分成3组,各组再分成对照组和实验组,用不同的方法致腹膜粘连,实验组用壳聚糖凝胶来预防粘连。