The presence of endodontic pain is perhaps the most common reason for an unscheduled visit to the dentist and most general dentists would probably see at least one or two patients with endodontic pain almost every working day.Effective pain control begins with an accurate diagnosis.Endodontic pain management encompasses all aspects of treatment: preoperative pain control includes accurate diagnosis and anxiety reduction; intraoperative pain control revolves around effective local anesthetic and operative techniques; and postoperative pain management can involve a variety of pharmacologic agents. An effective strategy for endodontic pain management is the "3D" approach, in which clinicians first Diagnose the pain condition, then deliver appropriate Dental treatment and finally administer effective Drugs.