Fixture for building construction

The utility model relates to the technical field of building construction, and discloses a clamp for building construction, which comprises a clamp body assembly, an adjusting assembly I is mounted in the steel pipe; the inner side walls of the two first bearing seats are rotationally connected with the first screws, the first hand wheels are installed at one ends of the first screws, the first sliding blocks are installed on the outer side walls of the first screws, the second fixing blocks are installed at the tops of the first sliding blocks, and the first sliding grooves are formed in the tops of the steel pipes. The top of the second fixing block is fixedly connected with the bottom of the second clamping plate. When adjustment is needed, a first hand wheel is rotated clockwise, a first screw drives a first sliding block to slide leftwards and meanwhile drives a second fixing block and a second clamping plate, after the second clamping plate is adjusted properly, rotation of the first hand wheel is stopp