Abstract: The yttria-stabilized zirconia(YSZ)film was fabricated on the La_0.8Sr_0.2MnO₃(LSM)substrate by electrochemical deposition.The effects of electrochemical deposition conditions on morphological structure of Y(OH)₃ -Zr(OH)₄ film were studied.The optimal conditions for depositing homogeneous and compact hydroxide film were obtained.The experimental results show that the density of the electrophoretic deposition film is increased remarkably if electrochemical deposition is applied to fill in the pores.