The invention relates to the field of decoration and ornament engineering, in particular to an adjustable tensile resistance curtain mounting assembly for decoration and ornament engineering. The mounting height of a rod piece can be adjusted, so that curtains of different sizes are used. The stability of the rod piece is reinforced in a bolted connection mode, a hanger groove and the vertical plane are arranged by a certain angle, the force borne by a curtain rod in the curtain pulling process is reduced, and the service life of the assembly is prolonged. A wall-mounted assembly is provided with a mounting seat, a mounting hole, an adjusting matching groove, a connecting fixing groove, a left end plate, a right end plate, a nut limiting groove and a nut. The nut can vertically move in the nut limiting groove, the curtain rod piece is provided with the hanger groove, a connecting piece and a connecting hole, and the angle between the hanger groove and the left end face of the connecting piece is alpha, wherein the alpha meets the relation of 10 degrees<= alpha<= 60 degrees. The wall-mounted assembly and the connecting piece are arranged in a corresponding mode, the connecting piece and the wall-mounted assembly are fixedly connected through bolts, and two end caps are connected to the left end and the right end of the curtain rod piece in a threaded connection mode correspondingly.