BACKGROUND:                 The background for choosing hypomagnesimia for my study inspite of many other electrolyte dearrangements encountered in Type II Diabetes is that hypomagnesimia is an important factor that alters diabetic foot related complications.                   Hypomagnesaemia has been described to occur with amplified   incidence in patients with type II diabetes mellitus .Magnesium is well–known to be essential for nerve conduction; insufficiency is well–known to cause peripheral neuropathy symptoms and studies propose that a deficit in magnesium could  deteriorate blood glucose control in type II diabetes. Researchers rely on that a  deficit of magnesium  interferes insulin excretion in the pancreas and upsurges  insulin resistance in the bodys tissues.   Methods: This study conducted   in   105  patients who are admitted     Department of General Surgery in Government Dharmapuri Medical College Hospital,    Dharmapuri , Tamil Nadu in between JAN 2016 and DEC 2016  with Type II DM with  diabetic foot  are studied. A detailed history and clinical examination is recorded in all study groups Diabetic foot ulcers are graded using Wagner classification.Venous blood sample collected after overnight fasting in all diabetic foot patients for  serum magnesium . Serum magnesium level done by using colorimetric method. Serum magnesium level correlated with various grades of diabetic foot ulcer.   AIM OF THE STUDY:  The aim of this study is to findout the relationship between level of  serum magnesium and diabetic foot ulcer grades.   RESULTS:Hypomagnesaemia is a one of the most important contributing  factor in  diabetic foot patients. This study shows that there is a relationship between the level of magnesium and severity of diabetic foot ulcer.