Abstract: Based on Taylor’s frozen turbulence hypothesis, analytical expressions of scintillation and phase fluctuation power spectrum of the light wave propagation in atmosphere with different refractive index spectrum of turbulence were deduced. The influence of turbulent refractive index scaling exponent, inner scale together with outer scale on light wave power spectrum was discussed. Analytic results were summarized as follows. Firstly, with the increase of turbulent refractive index scaling exponent, the low-frequency spectrum of atmospheric scintillation isn’t only a constant, the high-frequency spectrum obeys the power law with an increasing exponent, and the slope of phase fluctuation power spectrum is increasing in the whole frequency range. Secondly, the bigger the turbulent inner scale