Objective To observe the clinical efficacy of incipient diabetic nephropathy treated with Ligustrazine Hydrechloride Injection plus Candesartan Cilexetil.Methods 80 cases of incipient diabetic nephropathy were randomly divided into a treatment group and a control group,with 40 cases in each group.On the basis of treated with insulin and antidiabetic drugs,The control group was given Candesartan Cilexetii and the treatment group was given Candesartan Cilexetil together with Ligustrazine Hydrochloride Injection.Results Plasma level of ET and NO,UAER and Ua1-MG of the two groups were all reduced,while the improvement of the treatment group was better than the control group.Conclusion The combination treatment of Ligustrazine Hydrochloride Injection and Candesartan Cilexetil was an ideal one for patients with incipient diabetic nephropathy.