The invention provides a dry powder thermal compounding direct coating method and system. The system comprises a powder coating device, a powder locating device and a heating device; mixture powder directly coats a current collector, wherein the mixture powder at least comprises a battery anode active material or a battery cathode active material and a solid adhesive material; the powder locatingdevice locates the mixture powder in the direction perpendicular to the running direction of the current collector; the heating device heats the mixture powder, so that the solid adhesive material isintegrally cured with other materials in the mixture powder and adheres to the current collector to form a mixture layer. The dry powder thermal compounding direct coating method and system have the advantages that the mixture powder cannot scatter, and the formed mixture is uniform in thickness; no solvent is needed, therefore the environmental pollution caused by the solvent can be reduced, andthe solvent and the cost for drying the solvent are saved.