To provide a trailing truck in the technical field of demonstrating the braking force to the braking and the stopping of a tow vehicle, more specifically, a trailing truck capable of demonstrating the braking force by effectively using the inertia force by a very simple structure.

A slide plate 3 which is slidable in the towing direction is installed on a base plate 2 on which cargoes of a trailing truck 1 to be towed by a tow vehicle are loaded. A towing plate 7 to be connected to the tow vehicle 10 is provided on a front part of the slide plate 3. A braking wheel 9 is installed on a lower side of the slide plate 3 at the position immediately before a rear wheel 6 installed on a rear lower side of the base plate 2, and the rear wheel 6 is brought into contact with the braking wheel 9 to generate the braking force when the tow vehicle 10 is braked.