The invention discloses a passenger aircraft seat convenient for mounting and adjusting, including slide rails, A slideway plate is clamped in a notch at the top of the slide rail, the left and rightsides of the slideway plate are clamped with a fixing plate at the edge of the slideway, The left and right sides of the fixing plate are threaded with countersunk bolts, and the bottom of the countersunk bolts are respectively extended to the inner cavities of the slideway plate and the slideway rail; the top of the slideway plate is welded with a connecting block; the top of the connecting blockis welded with a fixing frame; the top of the fixing frame is welded with a base; and the bottom of the base is provided with a through groove. The passenger aircraft seat facilitates mounting and adjustment, The purpose of quickly adjusting the seat inclination angle can be achieved by providing a mechanism convenient for inclination adjustment, and the neck of a passenger can be massaged by providing a neck massaging mechanism 14, thereby alleviating the neck fatigue of the passenger during long-distance flight, and the installation of the passenger aircraft seat can be completed quickly byproviding a mechanism convenient for installation.