To provide a staking board for platform truck that quickly, safely and easily carries a load by a platform truck.

A skateboard-like auxiliary truck 23 is attached to a platform truck 28. A user skates with his or her foot put on the auxiliary truck for speedy, safe, and easy movement. The auxiliary truck 23 includes a joint part freely movable in for directions with respect to the platform truck 28, an auxiliary truck part with wheels for placing the foot or the body, and a brake part safely stopping the platform truck. The auxiliary truck 23 has four wheels. The rear roller is a fixed wheel, and the front roller is a caster wheel and is excellent in turning performance. The auxiliary truck 23 can be turned by 180 degrees with respect to a horizontal axis, and is stored on a back side of the platform truck 28, and is fixed and stored by hooking a rubber cord attached to a fixing metal to a round hook.