Objective: To solve the problem of sealing glue overflow in YB25 Soft box Packer. Methods: Through improving the sealing and gluing system, a fan-shaped gluing wheel with intermittent gluing function was designed, and combined with the improved transmission system to meet its phase requirements. Results: The improved seal label gluing system realized controllable gluing length, the quality defect rate was reduced to 0%, and the monthly maintenance time was reduced by 146 minutes. Conclusion: The improved gluing system runs stably and effectively solves the quality defect of YB25 soft box cigarette packaging label glue overflow.