A lift guiding system for a car curtain, set on the left and right hand sides of a car rear windshield, comprises a gliding rail in strip shape, wherein remote from the rear window a cover is set; a passage, an opening, a slide, longitudinally movable set in said passage, wherein an upper end is jointed with an end of the rod of said curtain; and a rope, wherein a lower end is connected with the folding system of the car curtain; while the upper end is fixed on said slide; thus the rope is concealed; due to the cover the outward appearance and interior trim become unified; so a aesthetic appearance is achieved.