The traditional filter rod addition method has only been suitable for soft filter rod, while at present, some hard and non-splitable filter rod functional sections need to be used in the production of composite filter rod. In view of the current situation that there was no suitable adding method for the functional section of hard filter rod, a hard filter rod adding system was designed according to the requirements of filter rod composite. SolidWorks software was used to design the hard filter rod adding system, including charging device, feeding device, negative pressure transfer device, etc. The impact dynamics of the blanking device was analyzed by ANSYS software, and the stress state of the spring end cover was also obtained. PLC program control was completed by Beckhoof’s TwinCAT software, and the continuous loading and unloading process and adding function of filter rod could be realized. Theoretical analysis and practical test results show that the design of filter rod adding system is reasonable and practical.