Two　SnO2　+　RuO2/Ti　anodes　with　high　SnO2-concentrations　were　prepared　by　painting,　sintering　and　annealing　through　a　sol-gel　technique.　The　microstructure,　morphology　and　grain　size　of　coatings　and　the　electrochemical　properties　of　the　anodes　were　investigated　by　XRD,　DTA,　SEM,　TEM　and　CV.　It　is　demonstrated　that　the　anodic　coatings　consist　of　solid　solution　(Sn,　X)O2　(X　represents　Ru　or　Ti)　phases.　The　average　grain　size　of　the　coatings　is　about　less　than　30　nm.　When　the　annealing　temperature　increases　from　450°C　to　600°C,　the　solid　solutions　decompose.　The　crystal　of　the　coating　is　equiaxial.　The　morphology　of　TiO2　+　SnO2/Ti　coatings　is　a　mixture　of　mud-flat　cracking　with　a　kind　of　agglomerated　structure.