Installation method for no-stuff-crack window frame

The invention discloses an installation method for a no-stuff-crack window frame. The installation method comprises the following construction steps that firstly a building outer wall is deepened and designed to be a full-concrete outer wall, then a connecting piece effectively connected with concrete is fixed on a fixing piece through a self-tapping screw, and after the installation position of the fixing piece is well determined on a formwork, the fixing piece is fixed to the formwork through a self-tapping screw; and after molding and mold-releasing are conducted, the window frame and the fixing piece are directly connected through screws, and finally gluing treatment is conducted in a crack between the window frame and the fixing piece. According to the installation method for the no-stuff-crack window frame, a traditional window-frame installation procedure is changed, meanwhile the problem of leakage caused by the difficult crack stuffing due to the fact that the gas between a traditional window frame a