The universal accepted therapeutic method is intravenous laser therapy. Its unique ability is its action on the damaged vessels, which leads to opening up their lumens and cleaning their walls. The time needed for the healing of trophic ulcers is reduced twice. In the early stages of the disease, intravenous laser therapy improves the activity of the pancreas and reinstates insulin synthesis. In chronic complications of diabetes mellitus, intravenous laser therapy improves microcirculation in affected organs as well as stops further progression of the disease.