Method of manufacturing for conductive film comprising reduced graphene-oxide composite

The present invention relates to a method to manufacture a composite film including a reduced graphene complex and a conductive film using the same. The manufacturing method includes: a step (S1) to prepare graphene oxide from graphite; a step (S2) to manufacture reduction polymer solution by mixing a reduction polymer which has a polyvinyl alcohol base or an alcohol base with a solvent; a step (S3) to add a first coating performance facilitating solvent to the reduction polymer solution; a step (S4) to manufacture graphene oxide-reduction polymer mixed solution by mixing graphene oxide with the reduction polymer; and a step (S5) to thermal-treat the graphene oxide-reduction polymer mixed solution.