Disclosed is an apparatus for adjusting a robotic surgery plan and a method thereof. The apparatus according to the present invention comprises a surgery information storage unit storing an examined first image associated with an inputted robotic surgery plan and a target bone of surgery, a scene image obtaining unit obtaining a second image associated with a diseased part in real time in surgery room, an image registration unit matching coordinates of the examined first image with coordinates of the second image associated with the diseased part, a user interface displaying the examined first image and the second image associated with the diseased part, and a surgery control unit controlling the user interface so that the user interface displays the examined first image to be superimposed on the second image associated with the diseased part, which is inputted in real time.
