Assessment of amniotic fluid volume in diabetic pregnancies is important for maternal and fetus health judgment and pregnancy outcome and for this reason the purpose of this study is relevant using two ultrasonographic methods. The study included 49 Sudanese pregnant women with diabetes mellitus and 20 subjects as control group .The study was conducted at Omdurman Military hospital and Al -Saudi hospital in the period from December 2011 to April 2012. Ultrasound was done by using Mindray 6600, 2200 ultrasound machine fitted with 3.5 MHZ convex probe. Amniotic fluid volume (AFV) was measured by largest pocket and Amniotic fluid index (AFI) .The mean AFI for control group was found to be (16.6±2.4) and the largest pocket was (6.6±0.7),for diabetic sample AFI was (20.3±5.6), largest pocket was (7.4±1.9).T-test showed that AFI was found to be 4.66 at p <0.001, largest pocket was 2.93 at p-value 0.005. There is significant difference between AFI measurements and largest pocket for diabetic pregnant ladies compared to the control group.Measurements of AFV using ultrasound compared with type of diabetic and diabetic status is of great value to categorize the relative risk of complications related to diabetes.