Objective:This article is a discussion of Xiao Xian Xiong Decoction treating Type 2 diabetes patients who belong to“combination of phlegm and heat”syndrome.Method:Chosing 259 outdoor patients from September.2007 to July.2010,who were treated by the Xiao Xian Xiong Decoction.Using the descriptive statistical methods to analyze the measurement data.Describing the means,the standard deviations and the count material rates of the data.Main result:obesity patients are the main part of the patients treated by the Xiao Xian Xiong Decoction.8589% patients have the BMI＞8589，while 3389% have the BMI＞28。668% of patients have red tongue and 5598% patients has yellow bored with moss.Sink,Slippery,string and fast purse can be seen the most frequently。Conclusion：the main testify of using Xiao Xian Xiong Decoction is obesity.Second,the tongue and the coating should be considered.The clinic symptoms should be considered too.