Diabetic patients who have caused nerve damage can recover after regular and systematic treatment. Diabetic patients are prone to the comorbidity of peripheral neuritis, which usually belongs to a clinically comprehensive reaction and clinical syndrome after more than 3-5 years of diabetes. At this time, the following drugs can be applied for recovery: i. Application of B vitamins, such as vitamin B1, vitamin B6 and vitamin B12, etc. These B vitamins are able to play a certain role in repairing and damaging the damaged neurons. Second, nerve damage caused by diabetes can be lowered by lowering sugar as the fundamental therapeutic effect, and must be controlled by good drugs such as insulin injections or oral hypoglycemic drugs to control blood sugar. Third, the application of certain microcirculation improvement drugs, such as prostil, etc., can repair damaged neurons.