The pressure measurement of rigid model for long-span spherical shells structure was conducted at TJ-3 wind tunnel laboratory. Firstly, the non-stationary characteristics of wind pressure signals were verified by the run theory. Secondly, the wind signals of 1∶200 model structures were decomposed in the different scales by discrete wavelet transform, and the time-history curves of wavelet coefficients were obtained. For the quantitative analysis of intermittent characteristics of wind, the distribution of scale energy, intermittent factors, and intermittent energy were analyzed and compared. The studies show that wind field category had great influence on the stationary characteristics of drag coefficient and Z-direction lift coefficient as well as the intermittent energy ratio and intermittency factor in high scale region, but had small influence on the scale energy ratio of wind coefficients in the different scales. In the different scales, the overall drag coefficient presents positive correlation with Y-direction lift coefficient and negative correlation with Z-direction lift coefficient. In addition, the correlations between overall drag coefficient and Y-direction lift coefficient increased with the increase of scales.