Turbulence spectra are investigaed that result in the presence of fog and otherwise using Chongqing wind record from December 1989 to January 1990. Results show that under neutral and unstable stratification the frequency of peaks is higher in this hilly area as compared to the plains,with a narrower domain of the peaks;under nighttime hydrostatic stability,the energy increases sharply in the low frequency portion. Besides,case studies exhibit significant features of such spectra on a foggy day.