Exhaust gas purification filter and a manufacturing method thereof

High combustion efficiency of particulate matter (PM), coefficient of thermal expansion to provide an excellent exhaust gas purification filter and manufacturing method thereof lowered and heat resistance. There the exhaust gas purifying filter that is formed by the average aspect ratio was deposited catalyst material on a surface (= number average major axis diameter / number average minor axial diameter) of sintering the columnar aluminum titanate particles is 1.3 or more Te, the surface of the aluminum titanate, catalyst formed from the catalyst material is characterized in that it is carried by the heat treatment during sintering.