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Titanium based Ru-La-Sn coating anodes with various La compositions are prepared by thermal decomposition. The electrocatalytic activity of coating anode is investigated by open-circuit potential test, cyclic voltammetry test, anodic polarization curve test and alternation current impedance test. The morphology of the coating anode is studied by scanning electron microscope (SEM). It is shown that the prepared temperature has a great influence on the morphology of coating anode. The electrocatalytic ability of coating anode can be improved by doping with rare earth La. The highest activity of the coating anode is associated with the composition corresponding to 0.2 (at mole fraction) La. The increase of activity is attributed to the enhancement of active surface area.