The invention discloses a low-radiation outdoor textile containing double silver film layers. A composite film layer is deposited on the surface of the outdoor textile with a magnetron sputtering vacuum method and comprises a first dielectric layer, a first oxide layer, a first silver layer, a first battier layer, a second dielectric layer, a second oxide layer, a second silver layer, a second barrier layer and a third dielectric layer by sequentially stacking from the surface of the outdoor textile to outside. By means of the composite film layer with the structure, the two silver layers jointly have an effect of reflecting infrared thermal radiation, better low-radiation effect is realized, sufficient visible light transmittance can be guaranteed by means of small thickness of each layer, and original color and texture of the outdoor textile are reserved. All the outdoor textiles can be endowed with an infrared thermal radiation shielding function rapidly on a large scale, and betterthermal insulating and warm keeping effects are realized. Further, magnetron sputtering vacuum is free of any chemical addition, water pollution or air pollution and is an environment-friendly production mode.