Based on femtosecond photoeletron imaging technique and time-of-flight mass spectroscopy, the photoionization/photodissociation mechanisms of allyl chloride (C3H5Cl) at 200, 400, 800 nm femtosecond laser pulses are investigated. Results show that the photoionization/photodissociation mechanisms of C3H5Cl have dependence on laser wavelength. At short wavelength 200 nm, two-photon ionization is the dominant channel of parent molecule C3H5Cl, and other fragment ions are generated by dissociation of C3H5Cl+. When it shifts to longer wavelength, such as 800 nm, dissociation from intermediate states of C3H5Cl starts to play a leading role, and the signals of fragment ions are also enhanced. Photoelectron spectra further confirm that there are photoelectrons coming from neutral fragments at 400 nm and 800 nm, and they are generated from dissociation of the intermediate states of C3H5Cl. It implies that at 400 nm and 800 nm, the parent molecule may be excited to intermediate dissociation states with shorter life-time and produce neutral fragments, which makes the process of light dissociation play an important role in the long waveband.