Here, we report an ultrafast synthesizing method for large area transparent film of assembled pristine graphene platelets at liquid surface in two-minutes. Some 2−.3 layer pristine graphene platelets temporally solvated with N-methyl-2-pyrrolidone (NMP) are assembled at the surface of a dilute aqueous suspension using an evaporation-driven Rayleigh-Taylor instability and then are driven together by Marangoni forces. At their edges, physical binding works and the platelets are fixed. Typically, 8-cm-diameter circular graphene films are grown in two minutes. After graphene films formed, the films can be transferred onto various substrates with flat or textured topologies. This interfacial assembly protocol is generally applicable to other nanomaterials, including 0D fullerene and 1D carbon nanotubes, which commonly suffer from limited solution compatibility.