Introduction: Diabetes is a common metabolic disease, which leads to diabetic peripheral neuropathy. Peripheral neuron damage result in Nav1. 3 elevations. Exercise training has beneficial role in diabetes management and peripheral neuropathy. Alpha lipoic acid (ALA) is a powerful biological antioxidant. However, the role of exercise training and ALA on Nav1. 3 are not well understood. The aim of the present study was to investigate the effect of training with different intensity and Alpha lipoic acid supplement on soleus muscle Nav1. 3 protein in rats with type 2 diabetes. Thirty-five male Wistar rats were randomly divided into seven groups: healthy control, diabetic, complementary diabetic, intensive exercise diabetic, moderate exercise diabetic, intensive exercise + supplemental diabetic, moderate exercise + complementary diabetic. Methods: In this experimental study, 35 male Wistar rats were randomly divided into seven groups: healthy control, diabetic (D), complementary (alpha lipoic acid) diabetic (ALA), diabetic high intensity training (HIT), diabetic moderate intensity training (MIT), diabetes HIT+ALA (ALA + HIT), diabetic MIT + ALA (ALA + MIT). Rats were diabetic by intra-peritoneal injection of STZ. The HIT and MIT protocols were performed five days a week for six weeks. HIIT included 10 bouts of four minutes (running at 85– 90% of maximum speed) and MIT 13 bouts of four minutes (running at 65– 70% of maximum speed). ALA was administered orally 20 mg/kg once a day by gavage. Nav1. 3 protein levels were measured by immunohistochemistry method. Statistical operations were performed with SPSS version 16 software. Oneway analysis of variance and Tukey were used to analyze the data. Results: The level of Nav1. 3 increased significantly in diabetic group compared to the control (p≤ 0. 0001). Moreover, HIT (p=0. 0015), MIT p=0. 0056), ALA+HIT (p≤ 0. 0001) and ALA+MIT (p≤ 0. 0001) decreased significantly Nav1. 3 compared to the diabetic group. Conclusion: HIT and MIT can reduce the expression of NaV1. 3 in soleus muscle in diabetic rats. ALA combined with exercise training can be more effective to reduce diabetic neuropathy.