Abstract: Temporary buildings are widely used in engineering construction, emergency resettlement and other scenarios, and their envelope structures are prone to wind-induced uplift failure under wind disasters. At present, the wind pressure distribution characteristics and wind load values of non-rectangular temporary buildings remain unclear, which makes it difficult to directly guide engineering wind-resistant design. In this study, three typical flat-roof temporary buildings with I-shaped, L-shaped and U-shaped configurations are selected as research objects. The large eddy simulation (LES) method is adopted to analyze wind load characteristics under all wind directions. Based on the 70% wind pressure coefficient attenuation criterion, wind pressure zoning on building surfaces and statistics of zoned shape coefficients are implemented, and the differences in wind resistance performance of temporary buildings with different configurations are compared. The results show that the surface wind pressure of the three types of temporary buildings presents typical bluff-body flow characteristics; among them, the governing wind load condition for both I-shaped and U-shaped temporary buildings is the 60° oblique wind, dominated by corner flow separation and cavity trapped vortex effect, respectively; high negative pressure of L-shaped temporary buildings is distributed over multiple oblique wind directions without a unified governing condition; the vertical corner facades of I-shaped temporary building, adjacent facades at concave corners of L-shaped temporary building, facades on both sides of U-shaped temporary building cavity and roof are the weak regions for wind load; under the condition of the same floor area, the I-shaped temporary building has the optimal wind resistance, followed by the L-shaped temporary building; the through-type cavity of U-shaped temporary building generates strong trapped vortices with the maximum local negative pressure, exhibiting the most unfavorable wind resistance performance.