To simultaneously observe not only a principal part but also a surrounding wide range, the present invention provides a stereoscopic endoscope system (1) including an endoscope (2) including a plurality of image capturing units (22) which photograph a subject to acquire images at a leading edge of a long narrow insertion unit (21) insertable into the subject, an image processing apparatus (3) that processes the images obtained by the image capturing units (22) in the endoscope 2 to generate a display image, and an image display apparatus (4) that displays the display image generated by the image processing in the image processing apparatus (3), in which the image processing apparatus (3) generates the display image having a three-dimensional image generated from the plurality of images acquired by the plurality of image capturing units (22) arranged in a central part of the display image and having a two-dimensional image arranged around the outer periphery of the three-dimensional image.