Repairing and cutting device for building template base plate

The utility model relates to the technical field of building templates, in particular to a building template base plate repairing and cutting device which comprises a rolling type supporting platform assembly and an inverted-U-shaped installation frame arranged above the rolling type supporting platform assembly, and a magnetic attraction type connecting disc assembly is arranged in the inverted-U-shaped installation frame. A storage type circular cutter assembly is magnetically connected to the magnetic suction type connecting disc assembly, a telescopic push rod is installed on the inverted-U-shaped installation frame, and the extending end of the telescopic push rod is connected with the magnetic suction type connecting disc assembly. The storage type circular cutter assembly comprises an iron cylinder, an annular transition plate and a circular cutter, the iron cylinder is connected with the circular cutter through the annular transition plate, and the inner diameter of the iron cylinder is larger than th