The invention discloses an integral type warp-knitted spacer fabric sterilization filtering material and a preparation method thereof and relates to a filtering material. The integral type warp-knitted spacer fabric sterilization filtering material comprises an upper
surface layer, a lower
surface layer and a middle connection layer, wherein
activated carbon fills the three-dimensional space of the middle connection layer. The preparation method comprises the following steps: firstly weaving an integral type nano-silver
fiber warp-knitted spacer fabric; and performing
after treatment on the integral type nano-silver
fiber warp-knitted spacer fabric. Core fibers of the filtering material warp-knitted spacer fabric are uniform in arrangement, good in
pollution resistance and controllable in array density manually, so that the filtering material
impurity storing space can be maximized; spaced yarns of the filtering material warp-knitted spacer fabric are arrayed in a 1X1 shape, and the warp-knitted spacer fabric is in a I-shaped structure. The filtering material has the characteristic of deep filtering of a
porosity filtering material, is a compound type filtering material integrating surface filtering and deep filtering, is high in filtering efficiency, is good in filtering effect on peculiar smell and particulate matters, and has an excellent sterilization performance and the lasting sterilization capacity.