Ranging calibration method and device, range finder and electronic equipment

The invention provides a distance measurement calibration method, which comprises the steps that when distance measurement is performed on a target object, a first distance value of the target object is measured through a laser distance measurement system, a target image is acquired through an optical imaging system, the target image comprises a laser spot on the target object, and the laser distance measurement system and the optical imaging system are of a coaxial structure; according to the target image, the light spot center position of the laser light spot is determined, and whether the light spot center position coincides with the view field center position of the optical imaging system or not is judged; and if the light spot center position does not coincide with the view field center position of the optical imaging system, calibrating the first distance value based on the light spot center position and the view field center position to obtain a second distance value of the target object. The first dis