In order to explore the wind pressure distribution of continuous double-slope roofs under tornado, based on numerical simulations of computational fluid dynamics, the wind pressure distribution on the top surface of double-slope buildings under the 30°,45°,60° and other different slope conditions with vortex ratios of 0.18, 0.30, 0.50, 0.80, 1.00 and 1.50 placed in the center of the tornado is studied by using the Realizable k?ε turbulence model. The results show that: 1) When the building is located in the center of the tornado, the roof wind load is mainly manifested as suction; as the slope angle increases, the maximum negative pressure slightly decreases, which decreases about 1.5% , and the range of changes in the wind pressure on the double slope is small; 2) As the slope angle increases, vortex falls easily at the right ridge and the center of the double slope, resulting in a large negative pressure, resulting in a large negative pressure on the center and the right side of the double slope; 3) As the vortex ratio increases, the absolute value of the continuous double slope roof wind pressure coefficient shows a trend of increasing first and then decreasing, and then decreasing again. Under the operating conditions of vortex ratios of 0.3 and 1.5, the maximum value 1.680 and the minimum value 0.472 respectively appear, with a decrease of about 72% ; 4) At low vortex ratio, the vortex core radius is smaller, and the roof wind pressure changes significantly; while at high vortex ratio, the wind pressure contour difference is smaller, and the roof wind pressure changes are relatively gentle.