Calcium modified lead titanate sol was synthesized using lead acetate trihydrate, calcium nitrate tetrahydrate and titanium tetra-n-butoxide as starting materials, methanol and ethanolamine were elected as solvent and stabilizing or complexing agent, respectively. (Pb0.76Ca0.24)-TiO3 thin films were prepared on platinum-coated silicon and fused silica substrates with the solution using the pinning method. The surface morphology and crystal structure, surface compositions and chemical tates, electrical and optical properties of the thin films were investigated. The films have good composition homogeneity and thickness uniformity. The dielectric constant and dissipation factor of 1 kHz at room temperature were found to be 280 and 0.027, respectively, for thin films with 0.5mm hickness annealed at 6008C for 1 h. The remanent polarization and coervive field were 15 mC/cm2 and 64 kV/cm, respectively. The thin