An endoscope apparatus, comprising: an endoscope unit at least a part of which is configured to be inserted into an inside of an observation object and that propagates an image of the inside of the observation object irradiated with illumination light; a light source unit configured to emit the illumination light illuminating the inside of the observation object to the endoscope unit; an imaging unit configured to capture an image of the inside of the observation object having been propagated from the endoscope unit and to generate a captured image of the inside of the observation object; and a control section configured to perform driving control for the endoscope unit, the light source unit, and the imaging unit, and to determine whether an insertion portion being part of the endoscope unit having being inserted into the inside of the observation object is moving or has stopped, wherein a radiation angle of the illumination light is changeable, and the control section is configured to change the radiation angle of the illumination light in accordance with whether the insertion portion is moving in the inside of the observation object or has stopped, wherein the illumination light is spot-shaped illumination light in which an amount of light in vicinity of an optical axis in the insertion portion is larger than an amount of light in periphery of the optical axis, and the control section is configured to make the radiation angle of the illumination light small when it is determined that the insertion portion is moving forward in the inside of the observation object, and the control section makes the radiation angle of the illumination light large when it is determined that the insertion portion has stopped in the inside of the observation object, or is moving backward in the inside of the observation object. an endoscope unit at least a part of which is configured to be inserted into an inside of an observation object and that propagates an image of the inside of the observation object irradiated with illumination light; a light source unit configured to emit the illumination light illuminating the inside of the observation object to the endoscope unit; an imaging unit configured to capture an image of the inside of the observation object having been propagated from the endoscope unit and to generate a captured image of the inside of the observation object; and a control section configured to perform driving control for the endoscope unit, the light source unit, and the imaging unit, and to determine whether an insertion portion being part of the endoscope unit having being inserted into the inside of the observation object is moving or has stopped, wherein a radiation angle of the illumination light is changeable, and the control section is configured to change the radiation angle of the illumination light in accordance with whether the insertion portion is moving in the inside of the observation object or has stopped, wherein the illumination light is spot-shaped illumination light in which an amount of light in vicinity of an optical axis in the insertion portion is larger than an amount of light in periphery of the optical axis, and the control section is configured to make the radiation angle of the illumination light small when it is determined that the insertion portion is moving forward in the inside of the observation object, and the control section makes the radiation angle of the illumination light large when it is determined that the insertion portion has stopped in the inside of the observation object, or is moving backward in the inside of the observation object.