A catalyst carrier module comprising: a can of a rectangular tube shape having an inlet and an outlet; at least one cell forming body in which a plurality of hollow cells are formed by alternately laminating a wave plate and a flat plate which are coated with a catalyst on a surface thereof and inserted into the can ; and a fixing unit installed at the inlet and the outlet of the can to prevent the at least one cell forming body from detaching from the can , wherein the fixing unit comprises: fixing slots formed to penetrate a side surface of the can ; and a wedge member that is fitted to the fixing slots and that fixes between a first can and a second can , which are aligned adjacent to each other, to simultaneously prevent detachment of the at least one cell forming body inserted into the first can and the second can , wherein the wedge member comprises: a fitting groove portion in which side surfaces of the first can and the second can are fitted; a first fixing protrusion protruding from one side of the fitting groove portion and fixing the flat plates and the wave plates laminated to the first can ; and a second fixing protrusion protruding from the other side of the fitting groove portion and fixing the flat plates and the wave plates laminated on the second can . a can of a rectangular tube shape having an inlet and an outlet; at least one cell forming body in which a plurality of hollow cells are formed by alternately laminating a wave plate and a flat plate which are coated with a catalyst on a surface thereof and inserted into the can ; and a fixing unit installed at the inlet and the outlet of the can to prevent the at least one cell forming body from detaching from the can , wherein the fixing unit comprises: fixing slots formed to penetrate a side surface of the can ; and a wedge member that is fitted to the fixing slots and that fixes between a first can and a second can , which are aligned adjacent to each other, to simultaneously prevent detachment of the at least one cell forming body inserted into the first can and the second can , fixing slots formed to penetrate a side surface of the can ; and a wedge member that is fitted to the fixing slots and that fixes between a first can and a second can , which are aligned adjacent to each other, to simultaneously prevent detachment of the at least one cell forming body inserted into the first can and the second can , wherein the wedge member comprises: a fitting groove portion in which side surfaces of the first can and the second can are fitted; a first fixing protrusion protruding from one side of the fitting groove portion and fixing the flat plates and the wave plates laminated to the first can ; and a second fixing protrusion protruding from the other side of the fitting groove portion and fixing the flat plates and the wave plates laminated on the second can . a fitting groove portion in which side surfaces of the first can and the second can are fitted; a first fixing protrusion protruding from one side of the fitting groove portion and fixing the flat plates and the wave plates laminated to the first can ; and a second fixing protrusion protruding from the other side of the fitting groove portion and fixing the flat plates and the wave plates laminated on the second can . <EOS>