An end structure of articulated multiple unit vehicle body underframe, including two parallel side beams which are longitudinally disposed, two traction beams parallel to the side beams being disposed between the two side beams, wherein the two traction beams are longitudinally symmetrically arranged; whereby the underframe further includes a first bolster beam being laterally disposed between the traction beam and one side beam, and a second bolster beam being laterally disposed between the traction beam and the other side beam; whereby the underframe has a front end provided as a vehicle end connection passage area (A') and a rear end provided as a passenger compartment passage area (B'); whereby the ends of the two side beams and the traction beam, at the rear end of the underframe, are vertically connected to a partition wall, so that the overall structure of the end structure of vehicle body underframe forms, seen in a vertical view, an underframe structure having a shape of three same rectangles arranged side-by-side; whereby bottoms of ends of the two traction beams, which are located at the vehicle end connection area, are provided with a hinge seat; whereby lower surfaces of the two traction beams and the two bolster beams are fixedly connected to a hinge support structure, and one end of the hinge support structure is connected to the rear of the hinge seat, and the other end is connected to the partition wall; characterized in that the first bolster beam and the second bolster beam are disposed at a vehicle end connection area; bottoms of two bolster beams are respectively connected to an air spring of a bogie; the hinge seat is connected to a hinge device of the bogie; an intermediate floor is directly disposed at the upper part of the hinge support structure, a first side floor is provided between an upper part of one traction beam and an upper part of the side beam at the corresponding side, and a second side floor is provided between an upper part of the other traction beam and an upper part of the side beam at the corresponding side, so that the vehicle body underframe forms a concave-downward structure in a cross-section direction. laterally disposed between the traction beam and one side beam, and a second bolster beam being laterally disposed between the traction beam and the other side beam; whereby the underframe has a front end provided as a vehicle end connection passage area (A') and a rear end provided as a passenger compartment passage area (B'); whereby the ends of the two side beams and the traction beam, at the rear end of the underframe, are vertically connected to a partition wall, so that the overall structure of the end structure of vehicle body underframe forms, seen in a vertical view, an underframe structure having a shape of three same rectangles arranged side-by-side; whereby bottoms of ends of the two traction beams, which are located at the vehicle end connection area, are provided with a hinge seat; whereby lower surfaces of the two traction beams and the two bolster beams are fixedly connected to a hinge support structure, and one end of the hinge support structure is connected to the rear of the hinge seat, and the other end is connected to the partition wall; characterized in that the first bolster beam and the second bolster beam are disposed at a vehicle end connection area; bottoms of two bolster beams are respectively connected to an air spring of a bogie; the hinge seat is connected to a hinge device of the bogie; an intermediate floor is directly disposed at the upper part of the hinge support structure, a first side floor is provided between an upper part of one traction beam and an upper part of the side beam at the corresponding side, and a second side floor is provided between an upper part of the other traction beam and an upper part of the side beam at the corresponding side, so that the vehicle body underframe forms a concave-downward structure in a cross-section direction.