An endoscope apparatus includes an image processing portion for performing image processing on a signal of an image pickup picked up by an image pickup device installed in a distal end portion of an endoscope insertion portion to generate an endoscope image, a gravity direction detecting portion for detecting information about a gravity direction of the distal end portion, a gravity signal processing portion for performing predetermined signal processing on a signal of the information about the detected gravity direction to generate gravity information, a graphics generating portion for generating an indicator indicating the gravity direction based on the gravity information, and an image combining portion for combining the endoscope image and the indicator and outputting combined image information to a display apparatus. The graphics generating portion changes a display form of the indicator indicating the gravity direction according to the gravity direction.
