To　search　the　energy　saving,　environmental　protection　and　excellent　welding　electrode　to　replace　ThO2-tungsten　electrode.　The　article　study　the　effects　of　multivariate　rare　earth　tungsten　electrode,　ThO2-tungsten　electrode,　CeO2-tungsten　electrode　according　to　tungsten　inert　gas　(TIG)　welding　experiment　and　test　the　burning　consumption　indicates　that　the　burning　consumption　of　ThO2-tungsten　electrode　is　the　worst,　the　multivariate　rare　earth　electrode　is　prior　to　the　CeO2-tungsten　electrode;　the　welding　depth　and　width　are　related　to　the　welding　current　and　speed;　the　multivariate　rare　earth　tungsten　electrode　is　better　than　ThO2-tungsten　electrode　and　CeO2-tungsten　electrode,　while　CeO2-tungsten　electrode　is　prior　to　ThO2-tungsten　electrode;　compared　the　microstructure,　hardness,　morphology　of　fracture　and　tensile　test　of　CeO2-tungsten　electrode　and　multivariate　rare　earth　tungsten　electrode　welded　joints　shows　that　the　multivariate　rare　earth　tungsten　electrode　is　better　than　ThO2-tungsten　electrode　and　CeO2-tungsten　electrode,　which　can　replace　ThO2-tungsten　electrode　and　CeO2-tungsten　electrode　to　weld　aluminum　alloy.