Diabetic retinopathy is one of the common microvascular complications of diabetes.At present，Western medicine mainly adopts basic treatment methods such as controlling blood glucose，blood pressure，blood lipid and improving microcirculation，and in severe cases，laser photocoagulation，surgery or topical corticosteroids therapy are adopted.Traditional Chinese medicine(TCM)has unique efficacy in reducing the incidence of potential blinding complications and delaying the progression of the disease.Professor WEI Zixiao refers to patients with fundus examination to seize “primary symptom”，and used TCM theory to distinguish and treat diabetic retinopathy，mainly aiming at diabetic retinopathy without acute fundus hemorrhage.He paid attention to the combination of systemic and miro syndrome differentiation.The treatment was based on tonifying liver and kidney，nourishing blood and improving eyesight，supplemented by eliminating phlegm and blood stasis，activating blood circulation and promoting water，etc.In addition，he emphasized the importance of daily care，such as the use of drugs to soothe the liver and regulate qi and moisten the bowel to relieve constipation，so as to avoid the fundus bleeding again，with obvious clinical effects.