A laser distance finder including a laser generating device, a collimating lens positioned in an emitting end direction of the laser generating device, a receiving lens for receiving a reflected measuring beam from an object to be measured and focusing it into an image, an optoelectronic detector disposed in the distance finder, a reflective member rotatably mounted on an optical path of the collimating measuring beam via a rotating shaft and being capable of rotating to a first position and a second position around the rotating shaft, which is connected to an output shaft of a motor. The laser distance finder further includes a spring, and the reflective member that rotates to a desired position rapidly and exactly by utilizing various deformation status of the spring, thus saving power.