Car turning angle laser measuring instrument

The invention discloses a car turning angle laser measuring instrument. The car turning angle laser measuring instrument is characterized in that a measuring unit is arranged; a laser generator is arranged at the upper part of a hollow marker post; a dry cell is arranged in a marker post body; the bottom end of the marker post can be fastened on a pedestal; the pedestal with a dial is arranged on a base; the base is fixedly connected with a portable base plate with a handle; a pointer which is pointed to the dial is arranged at the side part of the marker post; an axial lead of the marker post is coaxial with that of a turning joint pin; a zero scale line of the dial and light emitted by the laser generator are both coplanar with a transverse axis of a turning joint; and a clamp can be arranged for fixing the measuring unit on the turning joint. By adopting the car turning angle laser measuring instrument, the precise and quick clamping can be achieved, and the production efficiency can be increased.