Background: Endoscopic Sinus Surgery (ESS) is the surgical practice of alternative for Sinonasal Polyposis (SP). Blood loss throughout Endoscopic Sinus Surgery be able to stop the flow of surgical procedure. The normal instruments grip and rip diseased tissues along with regular tissues causing amplified intra operative bleeding important to decreased visibility and therefore less accurate surgery. Microdebriders be extensively worn now a day in Endoscopic Sinus Surgery. This study is made to assess the advantages of microdebrider in Endoscopic Sinus Surgery in terms of blood loss throughout surgery, visibility of the field during surgery, duration of surgery and post operative healing. Methods: This is a potential study done in GEMS hospital, Srikakulam, over a period of October 2017 to September 2018. Patients who were diagnosed as sinonasal polyposis and underwent endoscopic sinus surgical procedure with microdebrider were taken into study and the outcome were documented and analyzed in terms of blood loss during surgery, visibility throughout surgery, time interval of surgery and post operative healing. Results: Out of 30 patients, majority of the patients had an average blood loss of 180 ml and preoperative visibility of grade 2 and standard duration of surgery of 60 minutes. the majority of the patients had grade A post operative healing Conclusions: The use of microdebrider leads to contented surgical procedure  and decreased rate of intra–operative complications and likely instrument in the practical endoscopic sinus surgery for the management of sinonasal polyposis