The invention relates to the technical field of gas filter materials, in particular to a nano-silver active carbon composite filter material. The composite filter material comprises a filter substrate and a nano-silver filter layer, wherein nano-silver is sprayed onto the nano-silver filter layer; and active carbon particles are attached between the filter substrate and the nano-silver filter layer. After a structure is adopted, the composite filter material has comprehensive, powerful and rapid antibacterial and disinfectant functions of the nano-silver through the nano-silver filter layer apart from cleaning functions such as powerful adsorption and the like of the active carbon, so that the practicability and reliability of the composite filter material are enhanced greatly and the popularization of the composite filter material of the invention is promoted.