Abstract: Diabetes mellitus (DM) is increasing at an alarming rate both nationally and worldwide, there is increased evidence in correlation between vitaminD(vitD),calcium, phosphorus and magnesium, altered vitamin D and calcium homeostasis may play role in the development of type2 diabetes mellitus (T2DM) this study aimed to evaluate calcium, phosphorus and magnesium in vit D deficient T2DM. A cross-sectional study Was Conducted in Khartoum state, 120 type2 diabetic patients enrolled, aged between 25-80 years, then classified in to two groups based on vitamin D level (<30 ng/ml represent study group (deficient),while >30ng/ml represent control),Anthropometrics parameters (age, gender, and body mass index),diabetes duration were examined.Glucose,25hydroxyvitamin(25-OHVitD), calcium, phosphorus and magnesium level was measured. Prevalence of type 2 DM and BMI>26.5 more frequent in females (63%, 77.60%) respectively compared to males (37%, 65.90%).Diabetic females have highly vitD deficiency compared to males (75% vs. 45.45%),study showed correlation between vitD, calcium and magnesium (r =0.2365,0.4467) respectively and inversely correlated with phosphorus (r=0.4467), although there was no different in mean of calcium, phosphorus and magnesium between two group (blood glucose<180 mg/dl and blood glucose>180mg/dl)P-value <0.05. our preliminary findings conclude calcium, magnesium and phosphate are essential nutrients in vitamin D deficient T2DM patients.