Some　binary　RuO2-SnO2　oxides　coated　on　Ti　were　synthesed　by　the　thermal　decoposion　method.　A　remarkable　behaviour　of　pseudo-capacitance　has　been　shown　on　the　cyclic　voltmmograms　of　the　prepared　samples.　It　is　concluded　that　the　poor　specific　capacitance　has　been　found　for　both　RuO2-enriched　and　SnO2-enriched　binary　oxides.　The　maximum　specific　capacitance　occurs　at　the　composition　of　40　mol%　SnO2　and　reaches　the　value　of　1080Fg(-1)　when　this　electrode　was　annealed　at　the　temperature　of　260　degrees　C.　The　addition　of　Sn　into　the　binary　oxide　coating　can　help　improve　the　electrode　capacitancee　and　do　no　harm　to　the　electro-catalytic　properties.