Diabetic retinopathy is one of the microvascular complications of diabetes and has become a common eye disease causing blindness in middle-aged and elderly people. Diabetic retinopathy occurs in 75% of people with diabetes for more than 20 years, and the quality of life and health of patients is severely reduced. The disease is characterized by hemorrhage, exudation, edema and proliferation of the fundus as the main clinical manifestations. Clinically, Chinese medicine has achieved certain efficacy by using a combination of systemic and ocular local identification. Chinese medicine believes that the main pathogenesis of this disease is deficiency of both qi and yin, phlegm and siltation of blood, blockage of the eye ligaments, and loss of nourishment of the eyes, so the treatment is based on nourishing the liver and kidney, benefiting qi and nourishing yin, activating blood and opening the ligaments. Clinical treatment is often divided into the following types: deficiency of both qi and yin, stagnation of ligaments, blurred vision, dry eyes, fatigue, shortness of breath and lazy speech, dry mouth and throat, spontaneous sweating, etc. Treatment: benefit qi and nourish yin, invigorate blood and open ligaments, with the formula of Sheng Wei San combined with Qi Ju Di Huang Wan plus reduction. Deficiency of liver and kidney, loss of nourishment of the eye-loop, blurred vision, dry eyes, dizziness and tinnitus, soreness of the waist and knees, numbness of the limbs, dry stools, etc. The treatment is to nourish the liver and kidney, invigorate the blood and promote the circulation of the ligaments, with the formula of Liu Wei Di Huang Wan plus or minus. Yin and Yang deficiency, blood stasis and phlegm clotting, retinal lesions are mostly in the proliferative stage, visible as blurred vision, dry eyes or serious disorders, fatigue, five heartburn, insomnia and forgetfulness, lumbago and cold limbs, cold and numb hands and feet, swelling of the lower limbs, etc. The treatment is to nourish Yin and nourish Yang, remove phlegm and eliminate stasis, choose Zuo Gui Wan for Yin deficiency and Right Gui Wan for Yang deficiency. Other therapies 1, stable condition, can take proprietary Chinese medicine. For deficiency of liver and kidney yin, use Mingmu Dihuang Wan; for deficiency of both yin and yang, use Jin Kui Kidney Qi Wan. 2.Direct current ionization of drugs: It enables the Chinese medicine preparation to directly reach the focal tissue of the eye, thus promoting the absorption of retinal hemorrhage, exudation and edema. It has the advantages of simple method, small trauma and direct action. 3.Medicinal therapy: diabetic retinopathy is mostly based on yin deficiency, so the choice of diet is appropriate to use cold and moist products. Can choose white fruit, water chestnuts and pears, sweet cold moisten the lungs, suitable for this disease; yam, wolfberry, poria and lentils, etc., to strengthen the spleen and remove dampness, suitable for this disease patients with retinal edema, you can cook porridge or soup; loofah, winter melon, celery and kelp, etc., cool, fire, nourishing yin, suitable for this disease, heat and retinal edema, vitreous turbidity. Avoid spicy products, such as garlic, chili, ginger, pepper, fried food, to prevent dry heat and fire injury. 4, laser and surgery: diabetic retinopathy developed to pre-proliferative, it is recommended that patients apply laser treatment with Chinese medicine; for patients who need vitrectomy surgery, before and after surgery, after Chinese medicine identification and treatment, with oral Chinese medicine, can promote the elimination of edema and exudation absorption, improve visual function and enhance the effect of surgery.