Planer tool base with blade convenient to replace

Provided is a planer tool base with a blade convenient to replace and a movable bearing pedestal. The planer tool base with the blade convenient to replace comprises a seat, a fixed bearing pedestal,the movable bearing pedestal and an adjusting device connected with the movable bearing pedestal and installed on the seat, wherein two guide pin holes are formed in the lower portion of the movable bearing pedestal, the end, with no fixed bearing pedestal, of the seat is provided with a rectangular cavity; two guide pins are arranged in the cavity; and the axis of each guide pin is parallel to the axis of the corresponding bearing installation hole in the fixed bearing pedestal. The movable bearing pedestal sleeves the guide pins in the cavity of the seat through the two guide pin holes, andthe movable bearing pedestal can slide on the guide pins. A shaft of a planer tool can be supported through the fixed bearing pedestal, the movable bearing pedestal and bearings on the fixed bearing pedestal and the movable be