Door and window hinge assembly convenient to install

The utility model relates to the technical field of door and window hinges, in particular to a door and window hinge assembly convenient to install, which comprises a fixed plate, a groove is formed in the top surface of the fixed plate, a sliding block is arranged in the groove, a connecting block is fixedly arranged at the top end of the sliding block, and a movable plate is hinged on the connecting block; a fixing piece is hinged to the surface of the end, away from the connecting block, of the movable plate; the two ends of the top end of the fixing plate are each provided with a first mounting hole and a second mounting hole. During installation, the fixing piece can be installed at the bottom of a window firstly, then the fixing plate is installed in the frame, and installation is rapid, easy and convenient. When the fixing plate is fixed through the screws, the screws can be prevented from loosening through the limiting plates, so that the stability of the fixing plate is enhanced; when the window need