TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Particles: The ceramic filler particles are metal oxide or metal complex oxide particles. The content of the ceramic filler particles in the composite film material is 10-60%, preferably 25-40%.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Cation: The reactive sulfonate surfactant contains lithium ion, sodium ion or potassium ion as cation.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: The sulfonate group is derived from vinyl sulfonate, allyl sulfonate, methyl allyl sulfonate, allyloxy hydroxypropyl sulfonate, methacrylate hydroxypropyl sulfonate, 2-acrylamido-2-methyl propane sulfonate, or styrene sulfonate. The polymerization monomer is methyl acrylate. Another polymerizable monomer (2-10 wt.%) of formula: H2C=CR1R2 is further added to the polymerization system.R1=H or CH3;R2=C6H5, OCOCH3-CN, C4H6ON, C2H3CO3, COO(CH2)nCH3;andn=0-14.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The polymer colloid particles are methacrylate polymer colloidal particles. The colloidal particles have average grain diameter of 10 nm-1.0 mu m, the ceramic filler particles have average particle diameter of 10 nm-5.00 mu m. The composite ceramic film has thickness of 10-40 mu m. Preferred Process: A colloid protecting agent and distilled water are heat-stirred to dissolve completely, and the surfactant, polymerization monomer and crosslinking agent are mixed evenly. The initiator is added to obtain polymer colloid latex. A ceramic filler and dispersing agent are added into distilled water, dispersed uniformly, ball milled and sieved with 200 meshes to obtain slurry. The colloid latex and the slurry are mixed and coated on a plastic band, dried, to obtain the composite film. The colloid protecting agent is chosen from polyvinyl alcohol, polyethylene glycol oxide, polyacrylic acid salt, polyvinyl pyrrolidone and polyvinyl alcohol, and is added in an amount of 5-30 wt.% of the polymerization monomer. The dispersing agent is polyvinyl alcohol, polyethylene glycol oxide, polyacrylic acid salt, polyvinyl pyrrolidone or polyvinyl alcohol.