Abstract: This article develops electromagnetic shielding woolen fabrics made of Silver-plated filament and single yarn twisting into plied yarn and Silver filament yarn directly used to be warp and wef. Fabric shielding effectiveness tests show that the shielding effectiveness of the twined fabric is superior to that of interwoven fabric, up to 85dB, which has preferable anti electromagnetic radiation effect. Besides, fabric warp and weft density and the wool and silver-plated filament of interwoven fabric has certain effect on the shielding effectiveness. The best tightness is 78% and the best ratio is 1:2 for wool and silver-plated filament. The result has certain directive significance on developing high-performance woolen fabrics against electromagnetic radiation.