OBJECTIVE:To investigate the perioperative use of antibacterials in patients undergoing C-sect.METHODS:The medical records of 753 cases between Oct.2005 and Mar.2007 were reviewed retrospectively.RESULTS:All the patients(100.00%)undergoing C-sect received antibacterials by iv gtt during perioperative period,and 99.07% were given at 0.5h before operation.Among all the antibacterials,73.31% were benzylpenicillin sodium.86.85% of the patients had a course of treatment of 2～3 days;93.36% of the antibacterials were used in single kind.As for the preventive medication outcome,the effective rate totaled 99.20%(694 CR+ 53 PR).CONCLUSION:The perioperative use of antibacterials in patients undergoing C-sect was rational on the whole.The antibacteirals were more often used singly for a course of 2 to 3 days.The low grade kind with low toxicity and cheap price is the preferred preventive medication for patients undergoing C-sect.