The purpose of this paper is to investigate the tensile property of laminated resin composites reinforced by carbon fiber plain woven fabric at relatively high temperature. For this purpose, the tensile tests of laminated resin composites are carried out at room temperature(20°C) and high temperature(150°C and 180°C). The effect rules of different temperature on the tensile property of these composites are discussed. The reasons for the variations of tensile property of these composites at different temperature are also analyzed. At 150 °C and 180 °C, the tensile strength of laminated composite decreased by 13.3% and 34.42% respectively, compared with that at room temperature, which shows that the tensile strength of resin laminated composites is sensitive at high temperature. The reason of the tensile strength of resin laminated composites declined at high temperature is that resin has been damaged and can not transfer tensile load, which makes resin and fiber can not bear the tensile load together at high temperature. The research results will provide a basic reference for the application of plain woven fabric reinforced resin laminated composites at room temperature to 180°C.