In order to investigate the effects of process parameters on the temperature distribution of the composite wound-layer， the classical thermodynamic theory is adopted to analyze the heat-transfer mechanism during the prepreg tape winding process. Based on the law of periodically winding， the model of temperature distribution is established with the change of the initial boundary condition of the old layer. And the accurate numerical solution of the one-dimensional heat transfer model is obtained using Matlab programming. According to the model， the influences of initial winding temperature， winding speed， and mandrel temperature on the temperature change of the wound-layer are discussed theoretically. The results show that that the level of influence on the winding layer temperature is mandrel temperature >winding speed> initial winding temperature. Moreover， no matter how the parameters change， the temperature distribution of the winding layer is always lower in the inner layer. As the radial position increases， the temperature of the winding layer gradually risers， and reach the maximum temperature in the outer layer. Besides， the temperature model proposed in this paper meets engineering requirements and can offer a guideline for the winding process through a comparative analysis of experiments.