A laser light waveguide device includes laser light provision units that oscillate and cause laser light to exit a laser light waveguide path formed of an optical fiber capable of guiding the laser light and a control unit that controls the laser light provision units. The control unit detects an illumination spot (output of the visible laser light) based on a captured image, captured by an image capturing unit, of a laser light illumination area and an area close thereto illuminated with the laser light, and controls exit of the infrared laser light by the infrared laser light provision unit based on a result of detection of the illumination spot (output of the visible laser light).
