The utility model discloses a device for solving mashed root of pier shaft concrete relates to bridge engineering construction technical field, including arranging the pier shaft template on the cushion cap top surface in, still to fix at template bottom surface flange channel -section steel down including inseparable laminating, the channel -section steel arranges along the horizontal extending direction of pier shaft template that the channel -section steel opening along flexible of channel -section steel length stopper, is equipped with the clamp plate in the channel -section steel down on the elastic component top surface, the subsides of elastic component bottom surface tightly on the cushion cap top surface, still are equipped with clamp plate height regulating mechanism on the flange of template bottom surface. The utility model discloses a sponge that will set up mouth at the bottom of the pier shaft template compresses tightly, guarantees that pier shaft template bottom is closely knit with cushion cap top surface bonding, and the emergence of " mashed root phenomenon " is avoided to tightness thick liquid among the assurance concreting process. Thereby guarantee pier shaft quality of concrete construction.