To fight against global warming and control the CO_2 emissions,several factors influencing the kinetics of CO_2 adsorption during moisture swing technology are systematically analyzed to solve the problem of slow CO_2 adsorption rate and poor kinetic performance under ultra-low CO_2 atmosphere. The multiple influencing mechanisms of structure parameter,temperature and humidity on CO_2 adsorption kinetics were studied through experimental analysis and theoretical model. Firstly,the CO_2 adsorption membrane was prepared by phase inversion technique, and then the porous and heterogeneous membrane with controllable structure and adjustable functional groups was obtained after optimization and screening,through which the reversible adsorption of CO_2 was realized. In light of the complex mass transfer steps of CO_2 adsorption for heterogeneous adsorbents,the traditional Shrinking Core Model was modified to describe the CO_2 adsorption process and all resistance during CO_2 adsorption was obtained. Meanwhile,the effects of the structure parameters,temperature and humidity on total mass transfer coefficient and individual step(diffusion and reaction)were studied by experiments. The results showed that the product layer diffusion resistance dominated the total mass transfer during CO_2 adsorption,indicating that the optimization of the adsorbent should focus on reducing product layer diffusion resistance.