The multiphoton ionization spectra of ethyl iodide are obtained by a time-of-flight mass spectrometer in the 473～483 nm region. It is found that parent molecules are firstly 2-photon resonantly excited to intermediate states of 3E, 2A1 and 1A2 in the A-band, and then dissociated. C2H+5 and I+ ions are produced by ionization of the neutral fragments. C2H+5 ions dissociate to a certain degree when absorbing photons further.