The invention provides a graphene-and-titanium dioxide composite material, low-temperature manufacture of the graphene-and-titanium dioxide composite material and application method of the graphene-and-titanium dioxide composite material. A graphite composite rate of the graphene-and-titanium dioxide composite material is 0.10-1.00wt%. The low-temperature manufacture of the graphene-and-titanium dioxide composite material comprises the following steps: adding titanium dioxide (TiO2) powder in the type of P25 to tetrahydrofuran solution of 10, 10'-dibromo-9, 9'-bianthracene in the graphite composite rate of being 0.10-1.00wt%, violently stirring, evaporating tetrahydrofuran, processing remainder at the temperature of 200DEG C for 30min, calcining in an inert gas such as nitrogen (N2) or argon (Ar) at the temperature of 400DEG C for 1-3 hours, and obtaining the graphene-and-titanium dioxide composite material. The graphene-and-titanium dioxide composite material can be applied to a positive electrode of a dye-sensitized solar cell, and has a good improvement effect to photoelectric conversion efficiency of the dye-sensitized solar cell. The low-temperature manufacture of the graphene-and-titanium dioxide composite material is simple in technology, low in equipment requirements, low in cost, and good in reproducibility, and accords with environmental requirements.