Objective: To evaluate the efficacy and salty of the Qi-ming granule in treatment of non-proliferative diabetic retinopathy (DR). Methods: Designing randomized parallel multicentric clinical trail, There are 212 eyes of 212 patients with non-proliferative DR who were enrolledand treated in the 5 medical centers with the same inclusion and exclusion criteria, Qi-ming granule group 107, Doxium-controlled group 105. Patients received periodic detailed ophthalmic examinations with fundus photography, fundus fluorescein angiography, symptom of T...