Moveable saddle-shaped prefabricated board die

The utility model relates to a moveable saddle-shaped precast slab die. The utility model comprises a stretching bed 4 which is provided with a steel reinforcement perforation 3, a saddle-shaped template 1 which forms a negative gauss hyperbolical paraboloid, a frame 9, a supporting riser 6, a reinforcing plate 5 and an arc-shaped bracket 7. The utility model uses the supporting structure of the frame, the supporting riser and the reinforcing plate, the stressed structure which is more reasonable can bear large force and can be not easy to deform, and the saddle-shaped precast slab with various lengths can be made. The length of the utility model is very long, when transportation is influenced, the utility model can be divided into some parts in order to be convenient for the transportation, and the utility model can be used so long as the parts are fixedly arranged together. The utility model also has the advantage of low cost.