Objective： To observe the clinical effect of Jiawei Shengyang tang in treating rheumatoid arthritis in active stage and its effect on gastrointestinal tract.Methods：Divided 124 cases of patients into control group and observation group randomly，62 cases in each group.The control group was given western medicine therapy，while the observation group was additionally receivedJiawei Shengyang tang therapy， both groups treating for 4 weeks.Observed the clinical effect，improvements of RA and gastrointestinal reaction in both groups.Results：Comparing the clinical effect in two groups，the total effective rate was 87.10%in the observation group and 70.97%in the control group，the difference being significant(P＜0.05).After 4 weeks of treatment，compared changes of arthralgia，swelling，morning stiffness time and tenderness and other joint symptoms in the observation group with those in the control group，differences being significant(P＜0.05).The gastrointestinal adverse reaction in the observation group was 1.61%，being lower than that of 16.13%in the control group，the difference being significant(P＜0.05).Conclusion：Western medicine combined with Jiawei Shengyang tang in treating rheumatoid arthritis in active stage can effectively improve the clinical effect and various symptoms of rheumatism.It will not cause damage to the gastrointestine，and is safe and effective.