Paint brushing device

The invention relates to the technical field of building decoration tools, and particularly discloses a coating brushing device which comprises a bottom plate, a long rod, a rolling brushing cylinder and a mounting plate fixedly connected with the bottom plate, rolling wheels are mounted on the lower surface of the bottom plate, a coating barrel limiting structure is fixed to the upper surface of the bottom plate, and the long rod is connected with the mounting plate through an adjusting structure. The rolling brush cylinder is connected with one end of the long rod through a connecting structure; the adjusting structure comprises a sliding rod arranged in the longitudinal direction and a sliding sleeve connected with the sliding rod in a sleeving mode, the sliding rod is rotationally connected with the mounting plate, a sliding groove is formed in the sliding rod in the longitudinal direction, the sliding sleeve is provided with a limiting block and is in sliding connection with the sliding groove, the slidi