Objective: To verify the effect of Jinmaitong composita (JMTC) on red blood cell aldose reductase activity (RBC-AR), red blood cell sorbitol (RBC-S) and nerve conductive velocity in diabetic peripheral neuropathy (DN) patients. Methods: Sixty-six patients with DN were randomly divided into two groups, 33 patients in the treated group treated with JMTC and 33 patients in the control group treated with Jingui Shenqi capsule (JGSQ). RBC-AR, RBC-S and nerve transmission speed were observed before and after three months treatment.Results: Level of RBC-AR, RBC-S apparently decreased and nerve conductive velocity increased (P <0.05,P<0.01) after JMTC treatment.Conclusion: JMTC can improve the nerve conductive velocity significantly with a lowering of RBC-AR and RBC-S and has a good result in treating diabetic peripheral neuropathy.