Scraper for grooving of painted surface

The utility model relates to the technical field of building construction, in particular to a scraper for grooving a painting surface, which comprises a connecting block and a detachable scraper mechanism, the detachable scraper mechanism comprises a hollow plate, a scraper body and a limit block, the outer wall of the top of the scraper body is fixedly connected with the outer wall of the bottom of the limit block, and the hollow plate is fixedly connected with the scraper body. According to the mortar scraper, through the arrangement of the handle, the connecting block and the scraper body below the hollowed-out plate, mortar at the position where the groove is reserved can be scraped off, a worker can rotate the hollowed-out plate on the connecting block, and therefore the angle of the scraper body is changed, and the scraper is convenient to use. And the scraper body matched with the width of the groove can be selected according to the width of the groove, and the scraper body is fixed in the limiting gro