The present invention provides a fuel cell electrode, which has increased physical and chemical durability, and a method for manufacturing a membrane-electrode assembly (MEA) using the same. According to the present invention, the fuel cell electrode is manufactured by controlling the amount of platinum supported on a first carbon support used in an anode to be smaller than that used in a cathode to increase the mechanical strength of a catalyst layer and maintain the thickness of the catalyst layer after prolonged operation and by adding carbon nanofibers containing a radical scavenger to a catalyst slurry to decrease deterioration of chemical durability.