Reshaping scale for ballast track bed

The utility model relates to the technical field of railways, and discloses a ballast track ballast bed shaping scale which comprises a positioning rod. A shell is welded to one end of the upper surface of the positioning rod, a positioning groove and a rotating groove are formed in the two sides in the shell respectively, and rotating rods are rotationally connected to the middles of the inner walls of the two sides of the rotating groove through bearings, penetrate through the middle of the winding drum and are fixedly connected with the winding drum. Through the combination of a knob, a rotating rod and a winding drum, a tape can be released and wound, a ballast bed is further detected, through the combination of a gear, a connecting groove, a connecting rod, a spring, a fixing block and meshing teeth, the fixing block can be pushed to move downwards through the elastic force of the spring, the gear is meshed with the meshing teeth, and the detection accuracy is improved. And the rotating rod in the middle