Camera calibration board tool of ground three-dimensional laser scanning measurement system

The utility model discloses a camera calibration plate tool of a ground three-dimensional laser scanning measurement system, which relates to the technical field of a calibration structure of the ground three-dimensional laser scanning measurement system and comprises a calibration plate and a universal rotating holder, and a telescopic frame is fixedly mounted at the bottom of the universal rotating holder. The end, close to the top, of the left side of the telescopic frame penetrates through and is rotationally connected with a rotating shaft, a handle is fixedly installed on the surface of the rotating shaft, the end, close to the top, of the left side of the telescopic frame penetrates through and is slidably connected with a limiting pin, and the end, close to the bottom, of the outer surface of the telescopic frame is slidably connected with a fixing frame; a base is fixedly installed at the bottom of the fixing frame, and a trundle A, a trundle B and a trundle C are movably connected to the bottom of t