objective To experiment and analyze the effects of baitouweng extract on ulcerative colitis model rats serum cytokines of TNF-α,IL-10. Methods The 48 Wistar rats are randomly divided into 6 groups: normal control group,model group,high dose group,medium dose group,low dose group,SASP group,TNBS method is used to prepare model of big UC rats,high,medium and low dose groups are respectively given baitouweng water extract according to the corresponding dose for intragastric administration; SASP group is given ...