Exhaust gas purification catalyst

An exhaust gas purification catalyst, comprising:

• a catalytic layer containing a particle component A and a particle component B on a carrier,
• wherein the particle component A is composed of catalytic-metal-doped CeZr-based mixed oxide powder in which catalytic metal is solid-dissolved in CeZr-based mixed oxide,
• the particle component B is composed of at least one selected from a group consisting of activated alumina powder, Zr-based-oxide-supported alumina powder in which Zr-based oxide is supported on activated alumina particles, and CeZr-based mixed oxide powder in which catalytic metal is not solid-dissolved,
• the particle component A has a particle size distribution with a peak in a particle size range of equal to or greater than 100 nm and equal to or less than 300 nm, and has a CeO2 amount of equal to or greater than 30% by mass and equal to or less than 75% by mass in a total amount of CeO2 and ZrO2, and
• at least a part of particles of the particle component B has a particle size larger than that of the particle component A, and the particle components A and B are mixed in the catalytic layer.