Terminal output light spot adjusting mechanism of laser beauty instrument

The utility model relates to a laser beauty instrument terminal output light spot adjusting mechanism. The laser beauty instrument terminal output light spot adjusting mechanism comprises an upper fixing plate and a lower fixing plate which are arranged in parallel in a spaced mode, an optical fiber fixing frame is arranged on the lower fixing plate, an optical fiber with a light source arranged vertically upwards is installed on the optical fiber fixing frame, and the upper fixing plate is installed on the lower fixing plate in a guiding mode through a guiding structure in the vertical direction. The lower fixing plate is provided with a stepping motor with an output shaft arranged vertically upwards, the upper end of the output shaft of the stepping motor is fixedly connected with a lead screw extending vertically, the upper fixing plate is in threaded fit with the lead screw, the lower fixing plate is provided with a front mirror assembly located over a light source of the optical fiber, and the upper fixi