Adjustable cart backrest

The utility model relates to a cart backrest, in particular to an adjustable cart backrest. A symmetrical fixed shaft is arranged at each of two sides of the lower end of a cushion, a sleeve hole is opened in the lower end of each fixed rack for connecting with the tail end of the corresponding fixed shaft in series, a plurality of slots are formed in the bottom of the end of each fixed rack connected with the fixed shaft in series, an F-shaped soft iron plate is arranged at the bottom of the bottom end of each fixed rack, a movable pad is hinged to the upper ends of the fixed racks at the two sides, locating holes are formed in the left and right sides of the upper end of the movable pad, a front backrest support rack is arranged at the front head face of the cushion, a shaft sleeve sleeves each fixed shaft far away from the front backrest support rack, a locating post is arranged at the surface of the upper end of each shaft sleeve, a screw is arranged at the surface of the top end of each locating post, a fixing hole is opened in the end of the movable pad, under the vertical state of the movable pad, a T-shaped pull handle is arranged at the staggered position of the fixing hole and the fixed rack, and a plurality of springs connected with the inside of a T-shaped pull handle ring in series are horizontally arranged at the surface of the fixed rack at the buckled position of the T-shaped pull handle and the fixed rack. The adjustable cart backrest solves the problem of limited carrying area and improves the riding comfort and safety for a passenger through regulating the distance between the passenger and the backrest.