Abstract: To solve the problem of influence of temperature on the spoke cable-truss structure, a designed cable-truss structure with a span of six meters as the object, an experiment on temperature response was conducted. According to the experimental results, the effect of temperature on the pretress of the upper and upper radial cables is most obvious, and the stability cable is defined as the temperature sensitive component. Based on the reliability theory, the reliability index and its changing trend under the displacement limit control were obtained, and the sensitivity of different structural parameters to the structure was obtained by the response surface method and Monte Carlo method. Prestress exerted by the lower radial cable, and live load were parameters with the maximum sensitivity.