A honeycomb structure includes at least one honeycomb unit and a peripheral wall at a peripheral surface connecting one end face and another end face of the honeycomb structure. The honeycomb unit includes inorganic particles, an inorganic binder, and cell walls extending along a longitudinal direction of the at least one honeycomb unit to define cells. The at least one honeycomb unit has a b-axis compression strength of about 1.0 MPa or less. A thickness T of the peripheral wall of the honeycomb structure is larger than 0.42V-0.25 (mm), where V is a volume of the honeycomb structure and in a range from about 1.0 liters to about 10 liters.