To provide a folding type traction member constituted in such a way that the traction member mounted on a truck can also be folded together at the time of folding a folding type container truck.

A lateral pair of fitting parts 12 with axial holes 13 are fitted by welding or the like into both side positions with a fold-in part 32 of a truck side face part held in between. A lateral pair of traction arm parts 2a, 2b are connected at the tip parts thereof by a hinge 9 so that both traction arm parts 2a, 2b can be folded in the mutually overlapped state, and both base end parts are provided with shaft parts 3. The shaft parts 3 are inserted through the axial holes so that both traction arm parts 2a, 2b are pivotally supported in a freely rising/falling state to both fitting parts 12.