Medical operation support system 200 includes a light source 11, an imaging unit 12, a control unit 2, and a projecting unit 3. The light source 11 applies excitation light beam having a predetermined wavelength. The imaging unit 12 captures an affected part 103 in operative field 101. The control unit 2 generates image data for projection based on captured image data captured by the imaging unit 12. The projecting unit 3 projects, onto operative field 101, projection image based on image data for projection. On operative field 101, the imaging unit 12 captures the projection image together with the fluorescent image of the fluorescence emitting region responding to the excitation light beam. The control unit 2 corrects the image data for projection, according to the difference between the fluorescent image captured by the imaging unit 12 and the projection image, to match the fluorescent image and the projection image.
