Catalyst for solid polymer fuel cell, electrode for solid polymer fuel cell, and fuel cell

Object of the present invention is to provide a humidification conditions or regardless of how carrier supporting conditions are reflected in high durability and high power generation performance of solid polymer type fuel cell catalyst. The present invention relates to a solid polymer type fuel cell catalyst which is on a carbon material which carries a catalyst component of the catalyst, wherein the carbon material 25 ℃, relative humidity of the amount of adsorption of water vapor at 10% (VlO) of 2ml / g or less, and the carbon material 25 ℃, relative humidity of water vapor adsorption amount of 90% (V90) of 400ml / g or more.