A honeycomb structure comprising: a tubular bonded honeycomb segment assembly having a plurality of tubular honeycomb segments having porous partition walls to define and form a plurality of cells which become through channels for a fluid and extend from one end surface to the other end surface, and also having a bonding layer which bonds side surfaces of the plurality of honeycomb segments to each other; and a pair of electrode members disposed on a side surface of the bonded honeycomb segment assembly, characterized in that a volume resistivity of each of the honeycomb segments of the bonded honeycomb segment assembly is from 1 to 200 Ωcm, at least a part of the bonding layer is made of a bonding material having a conductivity, a volume resistivity of the bonding layer having the conductivity is from 2 to 2000 Ωcm, and each of the pair of electrode members is formed into a band-like shape extending in an extending direction of the cells of the bonded honeycomb segment assembly, and in a cross section perpendicular to the cell extending direction, one electrode member in the pair of electrode members is disposed on a side opposite to the other electrode member in the pair of electrode members via a center of the bonded honeycomb segment assembly, wherein in the cross section perpendicular to the cell extending direction, the bonding layer has a both-end contact linear portion as a linear portion in which one end portion comes in contact with the one electrode member and the other end portion comes in contact with the other electrode member, and a resistance value between both the end portions (A, B) in the both-end contact linear portion is larger than a resistance value of the honeycomb segment. a tubular bonded honeycomb segment assembly having a plurality of tubular honeycomb segments having porous partition walls to define and form a plurality of cells which become through channels for a fluid and extend from one end surface to the other end surface, and also having a bonding layer which bonds side surfaces of the plurality of honeycomb segments to each other; and a pair of electrode members disposed on a side surface of the bonded honeycomb segment assembly, characterized in that a volume resistivity of each of the honeycomb segments of the bonded honeycomb segment assembly is from 1 to 200 Ωcm, at least a part of the bonding layer is made of a bonding material having a conductivity, a volume resistivity of the bonding layer having the conductivity is from 2 to 2000 Ωcm, and each of the pair of electrode members is formed into a band-like shape extending in an extending direction of the cells of the bonded honeycomb segment assembly, and in a cross section perpendicular to the cell extending direction, one electrode member in the pair of electrode members is disposed on a side opposite to the other electrode member in the pair of electrode members via a center of the bonded honeycomb segment assembly, wherein in the cross section perpendicular to the cell extending direction, the bonding layer has a both-end contact linear portion as a linear portion in which one end portion comes in contact with the one electrode member and the other end portion comes in contact with the other electrode member, and a resistance value between both the end portions (A, B) in the both-end contact linear portion is larger than a resistance value of the honeycomb segment.