Background: The surgical environment needs special challenges to safeguarding patient safety. The checklist of WHO was presented as one means of reducing harm and improving the safety of patient during operating theatre.Subjects:147 Pregnant women underwent to obstetric operation during time of study and hospitalized for more than 24 h after the operation and Obstetric surgical teams performance. Methods: Cross sectional study conducted at operating room of obstetric department in Zagazig University Hospitals during the period of time from May 2017 to February 2018 for observation of Checklist of Surgical Safety for all included patients in this study by medical team.Results: Items of SSC sign in were fulfilled with percentage above 90% except that patients had confirmed and prophylaxis of venous thrombo-embolism was needed only in 3.4% of studied cases .Items of SSC time out were fulfilled with 100% as sterilization was been confirmed, Resuscitation unit was on , Resuscitation equipment was present and working . Other items were less as vocally confirmation of procedure, prophylatic antibiotic been administrated through the final 60 minutes before incision , expected losing of blood and any patient-specific concerns (80.3%, 85.7%, 87.1% and 95.9%) .Items of SSC sign out were fulfilled 100% . Adverse events were 31.1% represented in 23.1% intraoperative hemorrhage and 5.4% bladder injury. There was no infectious adverse events in our study. 31.3% of our studied cases entered ICU post operation .Conclusion: Implementation of SSC was associated with reduction in complications and mortality in obstetric operations.