The invention discloses a glue scraping tool. The glue scraping tool is specially used for treating sealing glue between a wallboard and a wallboard member or the sealing glue at an overlapping jointseam of two other prefabricated parts in the same plane. The glue scraping tool includes a glue scraping plate for glue scraping and a handle. The glue scraping plate is in a flat-plate shape, the handle is connected to one side edge of the glue scraping plate, and a glue scraping edge is disposed on the other side edge of the glue scraping plate. The glue scraping edge is of a convex structure. The glue scraping tool has a good glue scraping effect, and leaves space for thermal expansion and contraction of a building material, and the aesthetic appearance of the building surface is ensured; and meanwhile, the glue scraping tool can be subjected to standardization production, the construction effect varying from person to person can be effectively avoided, and equipment of a prefabricatedbuilding is more specialized.