Objective：To observe the Xiao Zhong Tang of Traditional Chinese Medicine with the arthroscopic surgical the clinical efficacy in treatment of knee osteoarthritis.Methods：64 cases of arthroscopic surgery in patients with knee osteoarthritis were randomly divided into two groups, one group does not use the TCM treatment ,another group using the Xiao Zhong Tang.Postoperative were records of pain (VAS score), swelling index, and the JOA knee score,the evaluation of traditional Chinese medicine to participate in the clinical efficacy.Results:the black group in the 7 days,1 month,3 months after surgery theVAS score, the JOA swelling index and knee function scores compared with the control group, the difference was statistically significant (P＜005). Conclusion: The Xiao Zhong Tang with the arthroscopic surgical treatment of osteoarthritis of the knee has a good curative effect.