Drugs used in the treatment of diabetic neuropathy, mainly Epalrestat, lipoic acid, methylcobalamin and other drugs. Currently on the market more commonly used nutritive nerve drugs, mainly these three, these drugs are mainly to improve the microcirculation around the diabetic nerve, play the role of nutritive nerve, diabetic neuropathy has a certain therapeutic effect. Diabetic neuropathy treatment up time is relatively long, patients oral nutritional nerve drugs at least six months, can see more obvious treatment effect.