To observe of the effects of Danhong Injection on insulin resistance in patients with type 2 diabetes and blood stasis syndrome.Methods:A total of 60 cases of type 2 diabetes with blood stasis syndrome in Shanghai Chinese and Western Medicine Hospital from July 2015 to December 2，2017 were divided into 30 cases in the treatment group and the control group.The two groups were treated with aspirin.The treatment group was treated with Danhong Injection on the basis of this.Blood viscosity，fasting blood glucose，fasting insulin，insulin resistance index and insulin sensitivity index were compared between the two groups before and after treatment，and between the 2 groups.Results:The blood viscosity，fasting blood glucose and insulin resistance index of the 2 groups was significantly decreased in the group before and after the treatment (P<0.01).Fasting insulin and insulin sensitivity index of the two groups were significantly increased in the group before and after the treatment (P<0.01).The difference of blood viscosity and insulin sensitivity index between the two groups after treatment was compared.Their differences were statistically significant (P<0.05 or P<0.01).Conclusion:Danhong injection can reduce blood viscosity，improve insulin resistance and increase insulin sensitivity in patients with type 2 diabetes and blood stasis syndrome.