An electrically heated catalyst device , comprising: a carrier having a metal catalyst supported thereon; a pair of comb-shaped electrodes , each including a proximal portion and a plurality of wire portions , the proximal portion extending along a longitudinal direction of the carrier , and the wire portions extending from the proximal portion along a circumferential direction of the carrier ; a base layer formed on an outer peripheral surface of the carrier , the base layer being provided between each comb-shaped electrode and the carrier ; and for each of the plurality of wire portions , a corresponding respective fixation layer is joined to the base layer , wherein: each respective fixation layer partially covers a respective wire portion , thereby fixing the respective wire portion on the base layer , each respective fixation layer is rectangular in shape when the outer peripheral surface of the carrier is seen from a direction orthogonal to a central axis of the carrier along the longitudinal direction, a pair of opposite first sides of each respective rectangular fixation layer are parallel with an extending direction of each wire portion on opposite sides of the wire portion , and a pair of second sides coupling opposite ends of the pair of first sides are orthogonal to the extending direction of each wire portion , and a respective gap is formed between the base layer and a region of each respective wire portion covered with the respective fixation layer . a carrier having a metal catalyst supported thereon; a pair of comb-shaped electrodes , each including a proximal portion and a plurality of wire portions , the proximal portion extending along a longitudinal direction of the carrier , and the wire portions extending from the proximal portion along a circumferential direction of the carrier ; a base layer formed on an outer peripheral surface of the carrier , the base layer being provided between each comb-shaped electrode and the carrier ; and for each of the plurality of wire portions , a corresponding respective fixation layer is joined to the base layer , wherein: each respective fixation layer partially covers a respective wire portion , thereby fixing the respective wire portion on the base layer , each respective fixation layer is rectangular in shape when the outer peripheral surface of the carrier is seen from a direction orthogonal to a central axis of the carrier along the longitudinal direction, a pair of opposite first sides of each respective rectangular fixation layer are parallel with an extending direction of each wire portion on opposite sides of the wire portion , and a pair of second sides coupling opposite ends of the pair of first sides are orthogonal to the extending direction of each wire portion , and a respective gap is formed between the base layer and a region of each respective wire portion covered with the respective fixation layer . each respective fixation layer partially covers a respective wire portion , thereby fixing the respective wire portion on the base layer , each respective fixation layer is rectangular in shape when the outer peripheral surface of the carrier is seen from a direction orthogonal to a central axis of the carrier along the longitudinal direction, a pair of opposite first sides of each respective rectangular fixation layer are parallel with an extending direction of each wire portion on opposite sides of the wire portion , and a pair of second sides coupling opposite ends of the pair of first sides are orthogonal to the extending direction of each wire portion , and a respective gap is formed between the base layer and a region of each respective wire portion covered with the respective fixation layer . <EOS>