To provide configuration techniques for loading a plate-like substance onto a vehicle which can improve loading efficiency of a vehicle loading platform.

A vehicle loading system comprises a vehicle loading platform 10 and a supporting platform 1 which is detachably fixed to a vehicle loading platform 10 and supports plate-like substance 2 on the vehicle loading platform 10. The vehicle loading platform 10 includes a loading face and beam members 13. The loading platform 1 includes a first leg members 30 which are detachably engaged to the beam member 13 and a second leg members which permit the first leg members 30 to be raised above the beam members 13 by lifting the loading platform 1 relative to the vehicle loading platform 10 while the second leg members is in contact with the vehicle loading face.