Capturing CO2 by adsorption method is an important technology to realize the separation and removal of CO2 from industrial exhaust gas. Solid amine adsorbents have been widely explored due to its excellent adsorption capacity and selectivity of CO2, and low energy consumption for desorption. In fact, traditional powder adsorbents can only be used after molding in actual industrial processes due to its large pressure drop and other problems. However, monolithic adsorbents still face challenges such as insufficient adsorption capacity and poor mechanical properties. Herein, using macroporous epoxy resin polymer as template and tetraethyl orthosilicate as silicon source, the monolithic macroporous SiO2 was prepared by sacrificial template method. On this basis, the monolithic macroporous SiO2-based solid  amine adsorbent was obtained by impregnating different amount of tetraethylene pentaamine (TEPA). The monolithic macroporous SiO2 material takes the cross-linked hollow SiO2 microspheres as the skeleton, which has  a typical macroporous structure, and TEPA is evenly distributed on the surface of the skeleton. Under 75 ℃ and 0.1 MPa (12% CO2/88% N2), the CO2 adsorption capacity of 70T-MS sample with 70% TEPA loading is up to 191 mg/g, which can be stably maintained  above 160.0 mg/g even after 50 adsorption-desorption cycles. Dynamic adsorption results show that the CO2 adsorption kinetics follow the Avrami model, indicating that the adsorption process is less affected by mass transfer diffusion limitations. Furthermore, the mechanical strength of the adsorbents can reach 0.72 MPa (axial) and 30.30 N/cm (radial), meeting the requirements of industrial adsorbents. Moreover, the adsorbents also exhibit excellent thermal stability and low heat capacity (2.79 J/(g·℃)), which is expected to achieve  low-energy desorption and regeneration.