The delay line surface acoustic wave label with large capacity based on coding scheme of TOPPS needs to encode using the phase of carrier, but the phase of carrier will be influenced by the change of temperature. In the practical application phase temperature compensation to phase of carrier must be carried out. In order to solve this problem, this paper proposes a design method based on three standard temperature reflecting gratings and the method to determine the coefficient of temperature compensation in actual temperature compensation process.The influence of phase measuring error on the applicable scope and accuracy of temperature compensation is also discussed.