By analyzing the cathodic polarization curves,AC impedance spectroscopy,Tafel curves,surface morphology,EDS curves, and the influence of CeO2 composition on the structure and corrosion resistance property of Pb-WC-CeO2 composite coating was studied. The results show that:the addition of CeO2 can improve the cathodic polarization and promote the co-deposition of WC ef-fectively. Besides,we can obtain coating with smaller crystal uniformer surface and better binding force by adding CeO2. When the CeO2 composition in bath is 40 g·L-1 the surface micromorphology of the coating is in best properties,and the mass percentage of Ce and W are 8. 75wt%,3. 18wt%,respectively. However,the relationship between the mass percentage of the two elements and CeO2 composition in bath is non-linearity.%通过对阴极极化曲线、交流阻抗测试技术和塔菲尔曲线的测量，以及镀层微观形貌和能谱图的分析，考察了在电解液中添加不同浓度的纳米CeO2对Pb-WC-CeO2复合镀层微观结构和耐腐蚀性能的影响。结果表明：CeO2的加入，可增大阴极极化，有效促进WC的共沉积，使镀层晶粒更细，表面更均匀平整，有良好的结合力；当其浓度为40 g·L-1时，镀层表面微观形貌最均匀致密，平整有序，有最好的耐蚀性能，镀层中Ce和W含量达到最大值8．75wt%和3．18%，但W和Ce元素的含量与溶液中CeO2的浓度并不完全呈线性变化。
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