High density of ZnO nanorods were fabricated by electrochemical deposition and subsequent heat treatment. Formation of and ZnO during electrodeposition indicated that the electrodeposition efficiency of ZnO was below 33%. ZnO rod has a preferential (200) growth plane after heat treatment at and the growth rate of ZnO rod was measured to be 0.986 . Dye sensitized solar cell(DSC) showed the efficiency of 0.21% when electrochemically prepared ZnO rod was used as an electrode. It suggests the possible application of ZnO rod structure in the DSC.