Composite adsorption material capable of reducing precipitation rate of radon in concrete

The embodiment of the invention discloses a composite adsorption material capable of reducing the precipitation rate of radon in concrete. The composite adsorption material comprises the following components in percentage by weight: 60%-95% of active carbon, 2%-25% of silica fume and 2%-20% of zeolite powder. The composite adsorption material is directly added into concrete; zeolite powder enhances the mixing effect of each component and concrete while playing an adsorption role, so that the composite adsorption material is evenly distributed in concrete; moreover, silica fume can fully block pores among concrete particles; meanwhile, active carbon captures precipitated radon atoms so as to control the release of nitrogen from the source; the cooperation of the effects can directly reduce the concentration of radon indoors so as to solve the indoor radon pollution problem, and great significance in industrial production and daily life is realized.