Abstract: The paper selects epoxy resin and hollow fabric as radome material, and Debye model is used to analyze the relationship between the dielectric constant, loss tangent and temperature of the material. Based on the relationship between dielectric properties and temperature, an integrated simulation model of radome-antenna is established. The electromagnetic simulation software is used to simulate and analyze the electrical properties of radome antenna under different temperatures, such as transmissivity and far-field pattern. The influency of temperature on the electrical properties of radome is studied, and the transmissivity of hollow fabric radome is verified. The research results show that when the temperature exceeds 50 ℃, the dielectric properties of epoxy resin materials appear several maxima values with the increase of temperature, the transmissivity and far-field electrical properties of the loaded radome deteriorate at the maxima, which affects the normal operation of the antenna; the dielectric properties of hollow fabric material change little with temperature, and the transmissivity and far-field electrical properties are relatively stable when the radome is loaded, the simulation results are basically consistent with the test results.