A highly active Tiano TiO2-ZrO2 film modified electrode used for electrocatalytic reduction of maleic acid was achieved by sol-gel method. Nano TiO2-ZrO2 particles with the mono-dispersion structure and the diameter of about 30 nm were observed by XRD and SEM. By cyclic voltammetry and galvanostatic electrolysis experiments in maleic acid＋ 1.0 mol·L 1 H2SO4, the Tiano TiOz-ZrO2 film modified electrode was found to be much more electrocatalytive than the conventional TianoTiO2 cathode. The reaction proc- ess is controlled by diffusion. Galvanostatic electrolysis experiments were carried out on the Tiano TiOz-ZrO2 film modified electrode. At a current density of 20 mA,cm-2, a high yield of 96% was obtained at 60 ℃.%采用溶胶-凝胶法制备高活性Ti基纳米TiO2-ZrO2膜电极．通过X射线衍射分析表明，纳米TiO2-ZrO2粉体呈微-纳二级结构．扫描电子显微镜测试表明，颗粒平均尺寸约为30nm．通过循环伏安和恒电流电解技术研究发现，Ti／nanoTiO2-ZrO2电极对马来酸电催化还原制备丁二酸的活性要高于Ti／nanoTiO2电极，反应过程受扩散控制．以钛基氧化钌电极为阳极，Ti／nanoTiO2-ZrO2膜电极为阴极进行恒电流电解实验．结果表明，控制电流密度20mA·cm，温度60℃，丁二酸的产率达到96％．
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