The invention discloses a silicate/silver composite powder body with anti-microbial performance and preparation method. The composite powder includes layered silicate with a two-dimensional nanolayerstructure, and amorphous state silver is absorbed outside a layer of silicate; and silver ions and silicate slice layers form a molecular level tight recombination in the layers of the silicate. The invention further provides an anti-microbial functional composite material contained with the composite powder and a preparation method. The size of silver particles can be controlled by the layered silicate with the two-dimensional nanolayer structure, growing-up and aggregation of the silver particles can be prevented, steady compound is easy to form, and the drawback that antibacterial agent nano-silver is easy to aggregate and difficult to disperse is overcome; and a part of silver is inserted between the layers to form molecular level tight recombination with the layers of the silicate, gradual release can be performed in the future use process of materials, and the long residual action of functional polymer anti-microbial performance is improved. According to the anti-microbial composite powder and the anti-microbial functional composite material, raw materials used are simple, the price is low, the preparation technology is simple, the cost is low, and the anti-microbial ratio ofthe anti-microbial functional composite materials can reach a maximum of 99.2%.