Circle drawing device for building drawing marking

The utility model relates to the technical field of architectural design, in particular to a circle drawing device for architectural drawing marking, which comprises a cylindrical vertical cylinder, a sliding hole is formed in the top end of the vertical cylinder, a sealing plate is fixedly connected to the bottom end of the vertical cylinder, a through hole is formed in the middle of the sealing plate, and an impressing mechanism is arranged at the bottom end of the vertical cylinder. The stamping mechanism comprises a sliding plate and a printing plate, the sliding plate is arranged in the vertical cylinder, the top end of the sliding plate is fixedly connected with a vertical rod, the bottom end of the sliding plate is fixedly connected with a pressing rod, the top end of the printing plate is detachably connected with the pressing rod, and the bottom end of the printing plate is fixedly connected with a circular ring. Round mark drawing can be completed by pressing down the pressing plate, operation is ea