[Problems to be Solved] In a diagnostic endoscopic imaging support apparatus that identifies a tip position of an endoscope using a three-dimensional image of a subject obtained in advance, identifying the tip position of the endoscope in the three-dimensional image more accurately. [Means for Solving the Problems] A diagnostic endoscopic imaging support apparatus includes a three-dimensional image data obtaining section (11) that obtains three-dimensional image data of a subject, a tubular tissue shape data obtaining section (12) that extracts and obtains tubular tissue shape data representing a shape of a tubular tissue in the subject from the three-dimensional image data obtained by the three-dimensional image data obtaining section (11), an endoscope route data obtaining section (13) that obtains endoscope route data representing a route of an endoscope inserted into the subject, and a matching section (14) that performs matching between the tubular tissue shape data and the endoscope route data.
