Aim: In the present study shown that to investigate the comparison between left ventricular dysfunction and type 2 diabetes mellitus. Diabetes mellitus is a metabolic disease characterized by hyperglycemia, resulting from defects in insulin secretion and /or insulin action and/or insulin resistance. The incidence of asymptomatic cardiovascular disease in diabetes mellitus is of considerable importance and it has been suggested that 20% have occult disease like silent myocardial infarction. Echocardiography evaluation of patients have shown systolic and diastolic dysfunction in more than 50% of young insulin-dependent-diabetic patients. Material and Methods: This is a Prospective and Observational Study. The selection of the 50 Type 2 diabetes mellitus patients was done from either in patients admitted for control of diabetes or out patients. 50 controls for the study were chosen from volunteering staff members and patients attenders. Results: Patients with diabetes show an significant increase in the left ventricular mass, E/A ratio diastolic dysfunction as compared to non diabetes. Conclusions: We conclude that earliest detection of preclinical left ventricular abnormalities like dysfunction in both systole and diastole and then to take preventive steps in order to arrest of halt the progress of the disease.