The utility model provides an install furred ceiling stull light gauge steel's instrument fast, main part including T -shaped structure, be equipped with in the main part can be in the main part gliding baffle, be equipped with the scale mark that is used for measuring distance between baffle and the main part one end in the main part, the main part includes the splint of vertical setting to and install the foundatin plate on splint, the scale mark be located the foundatin plate, the splint cross -section is concave shape's structure the curb plate that intermediate lamella and both sides set up is equipped with the bellying of being connected with the foundatin plate on one of them curb plate, bellying and curb plate structural design as an organic whole, the curb plate sets up with the intermediate lamella is perpendicular. The utility model discloses have the workman and only need adjust the instrument size on ground, with stull fossil fragments card in the instrument splint, can go up the ladder and install fast, need not measurement size and mark, stull fossil fragments and instrument make up form as an organic whole when the installation moreover, take up the convenience, need not unnecessary action, the installation rapidly.