The present invention relates to an exhaust gas purification catalyst and aims to provide the exhaust gas purification catalyst having the excellent occlusion of the oxynitride contained in the exhaust. The exhaust gas purification catalyst of the present disclosure has a substrate, a first catalyst layer containing a catalytic metal for oxynitride reduction and an oxynitride storage material and formed on the substrate, and a second catalyst layer containing a catalytic metal for oxynitride oxidation and formed on the first catalyst layer. In the exhaust gas purification catalyst of the present disclosure, the value obtained by dividing the volume of all large pores having a pore volume of 1000 cubic micrometers or more by the total volume of all medium pores of having a pore volume of 10 cubic micrometers to 1000 cubic micrometers in the second catalyst layer is 2.44 or less.