Provided is an excessive length absorbing apparatus which absorbs the excess length of a primary resonant coil that is one of a pair of resonant coils which performs non-contact power supply via magnetic field resonance. A secondary hook in the excessive length absorbing apparatus hooks an excessive length portion of the primary resonant coil so as to hold the excess length portion of the primary resonant coil in a U-shape, and a holding member holds the secondary hook in a slidable manner.