This paper advances a new statistic way for localized particles of crystal by space configuration of momentum restricting on order of position and proposes the concept of macroscopic “thermal oscillation” in gradient field of temperature. The oscillation equation of “thermal oscillaton” and the wave propagation equation in temperature field of crystal are deduced from the Hamilton function with the oscillation kinetic energy and thermal potential energy. The finite propagation velocity of heat is analytically discussed.

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