Endoscopic sinus surgery has become a widely accepted surgical procedure for the treatment of chronic inflammatory sinus diseases. In our study 100 patients were suffering from polyposis treated by functional endoscopic sinus surgery in MMCH. Out of 100 patients 53 patients were suffering from ethmoidal polyp and 47 patients were suffering from antrochoanal polyp between the ages 7 to 45 years. Among antrochoanal polyp 2 patients were found with inverted papilloma and came with recurrence. 40% of the patients came with a follow up visit up to 1 year. 7 out of 53 cases of ethmoidal patient came with recurrence requiring revision FESS. There was no history of patient suffering from asthma or aspirin intolerance. Overall success rate was observed in 91%. Four patients were found with periorbital haematoma and 5 with fat coming out from orbit due to injury of lamina papyraceae.