The methanol cross-over is one of the most significant issue in the direct methanol fuel cell(DMFC). To improve the cell performance of DMFC, it is very important to the employment of high concentrated methanol as a fuel. However, the use of methanol is limited to low concentration because of the methanol cross-over problem. The distintive feature of Pt based electrocatalysts were examined by X-ray diffraction, TEM, several electrochemical analysis and unit cell test. In the half cell test, the kinetics of oxygen reduction reaction(ORR) were investigated using rotating disk electrode(RDE). Total number of exchanged electrons, limiting current density, exchange current density, Tafel slope of ORR were evaluated by Koutecky-Levich plot and Tafel plot[1]. In the sulfuric acid containing methanol electrolyte, PtPd electrocatalyst showed excellent catalytic activity for ORR compared to Ptelectrocatalyst. It is confirmed that better ORR of PtPd is attributed to selective oxygen reductive activity of PtPd in the presence of methanol. In the CO stripping voltammetry, PtPd electrocatalyst has more overpotential of CO oxidation rather than only Pt electrocatalyst. However, PtPd has stronger CO-tolerance due to the low CO coverage[2]