Abstract: In non-equilibrium turbulent flows, the properties betweenReynolds stress and rate of strain is different, the phase difference of theReynolds stress and rate of strain are stable in a sizable range. This isuseful to understand Reynolds stress and rate of strain, and posed greatproblem to non-equilibrium turbulent models and sub-grade Reynolds stressmodels in LES. Distribution of the disturbance and its non-line term andrelation of the phase were also studied with laminar model in this paper.