Honeycomb filter

A honeycomb filter comprising:

• a pillar-shaped honeycomb substrate having a porous partition wall disposed so as to surround a plurality of cells extending from an inflow end face to an outflow end face;
• and a plugging portion provided so as to plug end at any one of the inflow end face side or the outflow end face side of the cell, wherein
• in a section orthogonal to the extending direction of the cell, the shape of the cell is hexagonal,
• the cells having the plugging portion at ends on the outflow end face side and that are open on the inflow end face side are inflow cells,
• the cells having the plugging portion at ends on the inflow end face side and that are open on the outflow end face side are outflow cells,
• the partition wall comprises a first partition wall disposed between the inflow cell and the outflow cell and a second partition wall disposed between the inflow cells, and
• the first partition wall has a porous trapping layer on its surface for trapping particulate matter in exhaust gas, and the second partition wall has no trapping layer on its surface or has a trapping layer thinner than the trapping layer disposed on the surface of the first partition wall.