Disclosed herein are a method and system for generating an implant image. The system includes a computed tomography (CT) data input module, a CT data correction module, and a hybrid image generation module. The CT data input module acquires CT data acquired when a bite tool provided with a reference plate is inserted into the oral cavity of a patient and stereo lithography (STL) data generated using plaster patterns of teeth. The CT data correction module makes the reference plate of the CT data identical with the reference plate of the STL data, and corrects the CT data based on the STL data. The hybrid image generation module generates a hybrid image by combining the corrected CT data with the STL structure so that the CT data represents the teeth of the patient and the STL data represents the gums of the patient.
