This article mainly introduces Wang Yulin's experience in treating diabetic nephropathy by combining the basic Chinese medicine,internal medicine theories and the application of ethnic minority folk medicine.Wang Yulin summarized that diabetic nephropathy has the closest relationship with the spleen and kidney,which is commonly due to innate spleen and kidney deficiencies as well as acquired depletion,combined with dampness,phlegm,and blood-siltation factors.Wang summarized the causes of diabetic nephropathy through long-term clinical experience,ana-lyzed the disease mechanism,and administered treatment based on dialectic evidence,supplemented by his experi-ence in the use of medicines,which often achieved satisfactory results in clinical practice.In his long-term clinical practice,he has seen many patients with diabetic nephropathy due to long-term poor glycemic control.Wang is good at diagnosis and treatment,using traditional Chinese medicine as a whole,and summarizing his own experience in the use of medicines,self-designed Wang's nephritis decoction,which is mainly used for chronic nephritis,diabetic ne-phropathy with spleen and kidney Qi deficiency,which is caused by edema,proteinuria and other symptoms.This pa-per summarizes the experience of Wang Yulin famous Chinese medicine practitioner in treating and diagnosing dia-betic nephropathy.