Sub-clinical hypothyroidism is an independent risk factor for development of diabetic nephropathy. Severe hypothyroidism (biochemically) may be completely asymptomatic. Though our patient had throid stimulating hormone level more than 100 mIU/L, he did not have any symptoms of hypothyroidism.so diagnosis of hypothyroidism depends on laboratory parameters rather than clinical findings Recognition and treatment of hypothyroidism in diabetic patients will benefit glycemic control and improve general well-being ). Diabetic nephropathy, a major micro-vascular complication of type 2 diabetes mellitus, is an important cause of chronic kidney disease. It results from interactions between hemodynamic and metabolic factors .