Exhaust gas purification filter

An exhaust gas purification filter comprising:

• a honeycomb structure part that has a porous partition wall and a plurality of cells defined by the partition wall to form an exhaust gas flow path;
• and
• a sealing part that seals alternately a gas inflow-side end face or a gas outflow-side end face of the cells, wherein
• the exhaust gas purification filter includes fine pores with diameters of 10 μm or less measured by the mercury intrusion method that account for 5% or more of all pores by volume in the honeycomb structure part, and
• the partition wall has a plurality of communication pores communicating between cells adjacent to the partition wall and has constricted communication pores of which a largest diameter Φ1 (μm) and a smallest diameter Φ2 (μm) satisfy relationships Φ1≥50, 100×Φ2/Φ1≤20, and
• the proportion of the constricted communication pores in all the communication pores is 20% or more.