Diabetic syndromes include diabetic nephropathy, diabetic fundopathy, diabetic gangrene, diabetic cardiovascular disease, and diabetic neuropathy. Firstly, control the indicators of blood glucose, blood lipid and blood pressure within the normal range. According to the different complications, symptomatic treatment is given, such as diabetic nephropathy, Bailing capsule and Huangkui capsule are given to eliminate urinary protein. For fundus lesions, calcium hydroxybenzene sulfonate and compound thromboxane are given to improve fundus microcirculation. For diabetic gangrene, anti-inflammatory, vasodilating and nerve-nourishing treatments are given. For diabetic neuropathy, give oral methylcobalamin, vitamin B1, etc. For diabetic cardiovascular disease, clopidogrel, statins, etc. are given.