The utility model relates to the technical field of camping trailer devices, in particular to a camping multifunctional trailer chair which comprises a rectangular support, two supporting frames are symmetrically arranged on the inner side wall of the rectangular support, two pairs of U-shaped pieces are arranged on the two sides of the rectangular support respectively, round rods are rotationally installed in the two pairs of U-shaped pieces, and the two ends of each round rod are fixedly connected with universal wheels with top covers respectively. Two pairs of U-shaped pieces are arranged at the bottom of the rectangular support, deformed pieces are fixedly connected to the side walls of the two pairs of U-shaped pieces, a containing piece is arranged in the middle area of the bottom of the rectangular support, the top of the other end of the containing piece is fixed to the bottom of the supporting frame, and a trailer rod is arranged on one side in the containing piece. And the bottoms of the two sections of the round rod are fixedly connected with the universal wheels with the top covers, and meanwhile, the top covers are connected with the deformed parts on the side walls of the U-shaped parts through bolts, so that the wheels can be folded inwards, the occupied space during storage is reduced, and the experience feeling of a user is improved.