Proliferative diabetic retinopathy (PDR) is more advanced stage in diabetic retinopathy (DR), often with vitreous hemorrhages and traction retinal detachment which seriously affects patients' vision and even leads to severe visual impairment. Pars plana vitrectomy is an effective treatment for PDR. However, the operation procedure is quite complexed. Inadequate management can negatively impact postoperative vision or even lead to complications. Therefore, it is very important to clarify the surgical indications and standardize the operating procedures of PDR. To this end, Fundus Disease Group of Ophthalmological Society of Chinese Medical Association, Fundus Disease Group of Ophthalmologist Branch of Chinese Medical Doctor Association, Expert Group of Expert consensus for pars plana vitrectomy treatment of type 2 diabetic retinopathy focus on 9 key clinical issues, based on the latest evidence-based medical evidence, combined with international guidelines and China's social and economic development. Recommendations were made on the selection of DR Surgery timing, perioperative blood glucose management, surgical mode selection, formulation of surgical operation plan, drug combination or laser therapy, etc., which formed China's expert consensus on pars plana vitrectomy in the treatment of type 2 DR. This consensus is applicable to Chinese doctors specializing in fundus diseases and doctors engaged in fundus diseases, aiming to provide scientific guidance for vitreous surgery treatment of PDR patients, assist clinical decision-making, and further improve the level of surgical treatment of DR in China.