Post-operative pain management after functional endoscopic sinus surgery for chronic rhinosinusitis is a field with lack of proper guidance and research. Aim of this study was to study post-operative pain and its management. In this prospective observational study 52 patients undergoing functional endoscopic sinus surgery were examined using Quality Improvement in Post-operative Pain Management (QUIPS) questionnaire post-operatively on 1st day, 2nd day and day of 1st follow up permitting standard assessment of all pain related parameters, outcome, and process parameters. Pain was relatively low after surgery throughout with nominal increase on 2nd day and relatively diminishing on 1st follow up day. Positive pain counselling and many other factors affect pain and related parameters in the patients. Opioid analgesics can be effectively avoided in these patients and pain management protocol should be established for all surgeries along with judicious use of analgesics and proper use of positive pain counselling.