Roadbed planning model for highway design

The utility model relates to the technical field of highway design, and discloses a roadbed planning model for highway design, which comprises a water receiving seat, the upper end of the water receiving seat is fixedly connected with the same supporting plate through a plurality of supporting columns, a model main body is clamped at the upper end of the supporting plate, and the upper end of the water receiving seat is further fixedly connected with a transverse plate through a plurality of upright columns. Two side plates are symmetrically and fixedly connected to the upper end of the transverse plate, an adjusting screw rod is rotationally connected between the two side plates through a bearing, an adjusting motor is fixedly installed on the outer wall of one side plate, the output end of the adjusting motor is fixedly connected with one end of the adjusting screw rod, and the rod wall of the adjusting screw rod is sleeved with an adjusting block in a threaded mode; and the lower end of the adjusting block