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Aimed at relying on the observation of drivers easily lead to accidents on the highway, according to the freezing temperature and conductivity of ice, combined with the optical transmission characteristics in the ice, this paper presented a new innovative system which is icy dectection system for highway pavement based on ZigBee. This system can get the ice thickness and ice type by changing the collection fiber intensity, with temperature and resistance. The design principle of the resistance temperature and light intensity acquisition module is introduced in detail, the experimental test environment is introduced. After verification, the system can effectively detect the ice thickness and ice type. 