Introduction: Hysterectomy is one of the most frequently performed gynecological procedure worldwide. One of the major concern after any hysterectomy is post operative bleeding. The overall incidence of hemorrhage after hysterectomy is 0.2-21-2.Highest incidence with TLH(1.51%), followed by VH(0.68%) and TAH(0.62%)3. Objective: To compare the incidence of vault hematoma in post op patients with pelvic drain versus without pelvic drain. Secondary objective is to compare the post-op morbidity in terms of fever, decline in Hb level, rise in WBC and duration of hospital stay. Material & Methods: A prospective observational study done at department of obstetrics & gynecology, L N medical college Bhopal (M.P) for a period of 6 months. Total of 133 women undergoing hysterectomy for benign reasons were included and divided into two groups, “Drain” vs “No drain”. Foley’s catheter No. 16” was inserted as drainbefore vault closure in abdominal and vaginal hysterectomy. Drain was removed after 24 hrs and Usg pelvis was done on 4th post-op day. Result: Vault hematoma developed in 9.6% in “Drain” group and in 29.8% in “No drain” group (p=0.009).The incidence of fever in the Drain group was 9.6% and in the No drain group was 28.1%(0.015). Urine culture was positive in 17.3% of the drain group and 28.1% in the No drain group(p-0.039).the diiference in the duration of postoperative hostipal stay and decline in Hb in both groupswere insignicant.