The invention discloses a preparation method of a titanium graphene reinforced copper-based carbon contact strip composite material. The preparation method includes: heating and melting binder, addingdried and dispersed carbon fibers, stirring, grinding titanium powder, copper powder and graphene powder, performing primary dry mixing, secondary dry mixing and wet mixing, performing compression molding, performing primary calcination, copper impregnating and secondary calcination, and discharging from a furnace to obtain the composite material. The preparation method has the advantages that the titanium powder, by adding the graphene powder and the carbon fibers into the raw materials to allow the titanium graphene reinforced copper-based carbon contact strip composite material to be integrated with other materials in the raw materials, the mechanical strength of a finished-product carbon contact strip can be increased, the carbon contact strip is less prone to breaking and fracture during operation, and the mechanical strength, electric conductivity and impact resistance of the pantograph carbon contact strip are increased.