The invention discloses a coked naphtha dialkene saturated catalyst. The coked naphtha dialkene saturated catalyst comprises a carrier and main active metals; the main active metals are loaded onto the carrier; Zn and Fe are taken as the main active metals; Al2O3-TiO2-La2O3-graphene composite oxide is taken as the carrier; the specific surface area of the coked naphtha dialkene saturated catalystranges from 250 to 500m2/g, the pore volume ranges from 0.5 to 0.8mL/g. The invention also relates to a preparation method of the coked naphtha dialkene saturated catalyst. The coked naphtha dialkenesaturated catalyst possesses a specific pore diameter, is large in pore volume, is capable of realizing high efficiency saturation of dialkene in coked naphtha, and is capable of protecting main hydrofinishing agents.