CERAMIC HONEYCOMB STRUCTURAL BODY AND ELECTRICALLY HEATED CATALYST

An inside cell (30) and an outside cell (30) adjacent in the radial direction of a main body (21) are arranged in a deviated state. Thus, even in a case where a temperature increases or decreases drastically, expansion or contraction does not largely occur by heat in a radial direction, and a sufficient strength can be obtained with respect to a compression force or a tensile strength. In addition, since the inside cell (30) and the outside cell (30) are arranged in a deviated state, a shortest radial route length (R1), which routes circular arc walls (31 and 32) and linear walls (33 and 34), between a center (23) and an outer wall (22) of the main body (21) is larger than an outer shell radius (R2) of the main body (21). Accordingly, an electrical conduction path becomes long, and thus a ceramic honeycomb structure can be suitably used in an exhaust emission control device (10A), for example.