An electronic endoscopic apparatus includes an endoscopic scope, an imaging device provided in the endoscopic scope, a signal processing unit processing a captured image signal obtained by the imaging device to generate an observation image, a monitor device displaying the observation image, and a control unit controlling the signal processing unit to generate a high definition observation image and a high sensitivity observation image as the observation image, in which the control unit makes the signal processing unit generate the high sensitivity observation image at the time of screening the inside of the biological body, and generate the high definition observation image at the time of precise inspecting for an interest area in the body.
