An endoscope apparatus includes: a camera head configured to examine an interior of a subject and output a result of the examination; and a control apparatus electrically connected to the camera head and configured for the examination result to be inputted thereto from the camera head and to control operation of the camera head. The camera head includes a plurality of devices, and a CPU configured to perform initialization of at least one of the plurality of devices. The endoscope apparatus makes it possible to shorten start-up time of the entire endoscope apparatus.