The invention relates to the field of tire manufacture, in particular to a novel exhaust line pressing device. The novel exhaust line pressing device comprises supports, a multi-layer sheet, an embossing roller, protecting rollers and limit mechanisms, the supports include a left support and a right support, the multi-layer sheet is mounted between the left support and the right support, the embossing roller at the lower end of the multi-layer sheet is mounted between the left support and the right support, the protecting rollers respectively arranged at the front end and the rear end of the multi-layer sheet are mounted between the supports, and the limit mechanisms are mounted at the upper end of the multi-layer sheet. The novel exhaust line pressing device has the advantages that simplicity in design and convenience in usage are realized, the problem that the middle of the multi-layer sheet swells is solved through the limit mechanisms, and oil cylinders control limit rollers to move up and down to control depth of pressing so as to guarantee that lines can be pressed in the middles of semi-finished products.