Aim of Work: To evaluate the correlation between abnormal uterine bleeding in IUD users and the position of IUD, uterine size, endometrial thickness, uterine artery Doppler [pulsitility index (PI); Resistant index (RI)] using transvaginal ultrasound and Doppler Material and Methods: The study included 100 women divided into two groups:Group I (n=50): women who have been using an IUD for at least 6 months, and experienced symptoms after insertion of IUD in the form of menstrual disturbances may be in the form of increase in the amount and/or duration of the menstruation . Group II (n=50): women who have been wearing an IUD for at least 6 months, and did not experience menstrual disturbances or pelvic pain after insertion of IUD.Results: •When the IUD-F distance of 25mm, it is used as the limit of normally above which IUD removal would be recommended.•In this study there is no statistically significant difference in the endometrial thickness, uterine size between the study and control groups(P<0.001).•As regard to Doppler findings, it was noted that RI And RI was significantly lower in group I in comparison to group II (P<0.001). Conclusion: -There is a possible relationship between the IUD position inside the uterine cavity and the abnormal uterine bleeding in IUD users. -The higher the position of the IUD, the less the incidence of abnormal uterine bleeding associating the IUD, the IUD-F, IUD-M, IUD-E and IUD-IO distances may be used as good predictors for the IUD position inside the uterus. - The PI and RI were significantly lower in women with IUD-induced abnormal bleeding than in those using IUD without complaining of abnormal vaginal bleeding. . A pulsatility index of less than 2 may be associated with a higher risk for development of intrauterine contraceptive device-induced bleeding.