Control tool for sealing seams of fabricated building

The utility model discloses a control tool for seam sealing of a fabricated building. Wherein the plugging section stretches into the joint from outside to inside, the handheld section is located in front of the plugging section and located on the outer side of the joint, the connecting section is connected between the plugging section and the handheld section, the translation limiting piece is arranged on the outer side of the rear portion of the plugging section, and the connecting section and the plugging section are arranged on the same plane. The blocking section is a straight blocking strip and is arranged in the length direction of the joint, the height of the straight blocking strip is not larger than the width of the joint, and the thickness of the straight blocking strip ranges from 3 mm to 5 mm. The device is reasonable in design, simple and convenient to use and operate and good in using effect; the joint sealing material is limited in the joint through the plugging section; the entering amount an