Abstract: In order to selectively reduce the delivery of HCN in mainstream cigarette smoke, an amino-functionalized mesoporous silica material (MCM-41-NH₂) was prepared and characterized by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), specific surface area and pore size analyzer (BET) and ¹³C solid-state nuclear magnetic resonance (NMR), then the prepared material was applied to cigarette filter to reduce the deliveries of harmful components in cigarette smoke. The results showed that:1) Comparing with MCM-41 material, the crystal form of MCM-41-NH₂ did not change significantly, however its pore size and specific surface area were reduced by 50%. 2) When MCM-41-NH₂ material was added into cigarette filter, up to 25.7% of HCN in mainstream cigarette smoke was selectively reduced, while the physical parameters of cigarette and the deliveries of routine smoke components were basically the same as those of reference cigarette.