Introduction: Pain is the complex experience involving physiologic sensory aspects, emotional and psychological components. Globally intensity of pain postoperatively range between 30% to 95.2% depend on tissue damage and location of surgeries. Postoperative pain is the common symptom in patients after surgery. Acute postoperative pain being one of the complication following surgery may results from tissue injury during surgical procedure its management may start during premedication to prevent pain intraoperative and postoperative to enhance ambulation, functional recovery and reduce discomfort, the most important predictors seemed to be preoperative pain, expected pain, surgical fear, pain catastrophizing, lack of equipments and enough drugs and type of surgery. Care should be taken for these predictor for better outcome of the patient. Aim of the study: The aim of this study is to assess pain score in different surgeries, functions level, pain acceptability postoperatively and predictors of acute pain postoperative at KCMC. Methodology: Study will be done at KCMC in surgical wards for four month January to April 2017. All surgical wards will be visited one day before surgery day to look for the listed patient for next morning. All patient above 18 years planned for elective surgery during that period will be included in the study, during previsiting they will be interviewed and data on socio demographic characteristics, planned surgery and predictive factor will be corrected and filled on part one of the questionnaire, second interview will be done when they are full awake postoperatively and third one on the second day to gather information on assessed pain score, pain interference on physical functions, pain acceptability, type of drug used for pain management, frequency, route of administration and duration of administration and other information will be filled in the part two and three of the questionnaire respectively. Data entry and analysis will be done using Statistical Package for Social Science computer software version (SPSS) v20