The present disclosure relates to an image processing device, an image processing method, and a surgical system with which more accurate surgical resection can be performed in a shorter time. An identifying unit identifies the type of tissue degeneration in a mid-surgery image. In accordance with the identified type of the tissue degeneration, a drawing unit draws auxiliary information for the operator, the auxiliary information being to be superimposed on the mid-surgery image. The present disclosure can be applied to an endoscopic surgical system or the like that includes a display device, a camera control unit (CCU), a light source device, a treatment tool device, a pneumoperitoneum apparatus, a recorder, a printer, an endoscope, an energetic treatment tool, forceps, trocars, a foot switch, and a patient's bed, for example.
