Abstract: Objectives: to evaluate the effectiveness of the new modified B Lynch in controlling postpartum hemorrhage encountered during caesarian sections. Material and methods: clinical trial conducted in Benha university hospital, obstetrics and gynecology department started from November 2012to January 2104 uponpatients with postpartum. Forty (40) patients divided into two groups; group one (20 cases)operated upon by the modified compression suture applied horizontally over the lower segment securing the vertical suture in place and added more compression on the lower uterine segment, saving the life and the uterus of cases. Group two (20 cases) operated upon by the classic b lynch. Main outcome measures: stoppage of postpartum hemorrhage and avoiding cesarean hysterectomy. Results: success rate in group one reached 95% (one case of hysterectomy out of twenty) compared to 70% success rate of group two (6 cases required hysterectomy) with p value