Optical Phase-Conjugation (OPC) has been observed in Methyl Green (MG) dye sensitized gelatin films in Degenerate Four-Wave Mixing (DFWM) configuration at 633 nm radiation from a He-Ne laser of total power 35 mW.The mechanism of Phase-Conjugate (PC) wave generation associated with this dye-doped system was discussed.The dependence of the PC wave generation on the incident angle between the forward-pump and the probe beams and time of evolution were also studied.A maximum phase-conjugate beam reflectivity of about 0.13% has been observed in this dye-doped gelatin films.