The invention discloses a bundling plastic packaging and bagging device for glass tube products and belongs to the technical field of packaging equipment. The bundling plastic packaging and bagging device comprises a fixed part and a movable part. The fixed part is provided with a fixed frame, a plastic bag feeding mechanism, a plastic bag cut-off mechanism, a material pressing mechanism and a sliding rail, wherein the plastic bag feeding mechanism, the plastic bag cut-off mechanism, the material pressing mechanism and the sliding rail are installed on the fixed frame. The movable part comprises a movable platform, a lifting platform and a plastic bag expanding and sleeving executing mechanism. A sliding block is arranged at the bottom of the movable platform. The movable platform is assembled with the sliding rail of the fixed part through the sliding block. The movable platform is further provided with a lifting support. A lifting air cylinder is reversely installed on the lifting support. The lifting platform is installed at the lower end of a piston rod of the lifting air cylinder. The plastic bag expanding and sleeving executing mechanism is assembled with the movable platform and the lifting platform. By means of the bundling plastic packaging and bagging device for the glass tube products, the automation degree and the working efficiency of the glass tube product plastic packaging work are improved, the consistency of product packaging and the production takt is ensured, and in addition, hidden danger in the aspect of safety production is eliminated.