In this paper, near-surface wind field characteristics, wind pressure characteristics and non Gaussian characteristics of a long-span membrane structure under strong wind are analyzed based on measured data. The multi-point synchronous wind pressure measurement of the large span membrane structure is carried out in this project. Based on these data, the mean wind speed, the mean wind direction, longitudinal and lateral fluctuating wind velocity, gust factor, turbulence intensity，wind pressure coefficient, wind pressure dependency, probability density distribution, high-order characteristic statistics，power spectral density and other parameters are obtained. The results show that the edge of the membrane has obvious non-Gaussian characteristics under the strong wind, and it is a super-Gaussian process with the kurtosis over three; The up-and-down wind pressure is negatively correlated; The amplitude of the low frequency component of the measured wind pressure is larger, and the time interval of continuous impact of wind load on each position of the membrane structure is similar.