Abstract: Graphene/polysulfone amide (PSA) composite films with different mass fractions of graphene were prepared by spin-coating technique. The chemical composition, macromolecular structure, thermal property, electrical properties, mechanical properties and ultraviolet resistance were characterized and analyzed by means of optical microscopy, Fourier transform infrared spectrometer, surface resistance testing, thermal gravimetric analysis and ultraviolet spectrum. The results show that small amount of graphene can be evenly dispersed in PSA substrate, and the introducing of graphene does not change the chemical structure of PSA. The crystallinity of the composite membranes can be improved because the graphene 2D nano material can act as a nucleation agent. The mechanical properties and thermal properties of composite membranes can be improved correspondingly. When the mass fraction of graphene is 0.1%, the surface specific resistance of graphene/PSA composite membranes decreases to 1.40×10⁶ Ω quickly, while that of pure PSA membrane is 3.10×10¹² Ω. As the mass fraction of graphene increases, the electrical properties of graphene/PSA composite membranes improves correspondingly. Graphene plays an important role in strengthening the absorption and scattering of ultraviolet light and improving ultraviolet resistance.