Functional textile materials with low infrared emissivity and heat insulation are widely used in industrial and military fields. In this paper, the functional materials with low infrared emissivity and good heat insulation performance are prepared from the two aspects of low surface emissivity and controlling the surface temperature of objects. The effects of particle size and dosage of aluminum powder on infrared emissivity of coating are studied by using PA as film forming bonding material. Different hollow microbeads are used as thermal insulation filler, and the thermal insulation effect of coated fabric is studied. Finally, the low emissivity coating and heat insulation coating are combined to produce a material with low emissivity and heat insulation properties. The results show that the emissivity of 400 mesh sheet aluminum powder is lower than that of 600 mesh sheet aluminum powder. The infrared emissivity of the coating surface prepared by 20% 400 mesh sheet aluminum powder coating adhesive is as low as 0237. Since hollow microbeads are good thermal insulation fillers, 15% glass microbeads are used as thermal insulation layer, and 20% 400 mesh flake aluminum powder is used as infrared low emissivity coating. The emissivity of the prepared fiber-based composite coating material is 0507, and the temperature difference between the hot body sample and the background is 375℃. The material has good thermal insulation performance and low infrared emissivity.