The utility model discloses a wind -tunnel test device for simulating thunderstorm impact wind, perpendicular guide plate and the oblique guide plate of more than one including 4 vertical supports, two relative settings, the bolt fastening that vertical support passes through upper and lower both ends is in wind tunnel test section, and vertical support evenly sets up the spacing hole of a plurality of bolts along the direction of height, perpendicular guide plate both sides are fixed in on the spacing hole of bolt of vertical support, the guide plate is located between the two perpendicular guide plates to one side, and the front and back end on its left and right sides limit sets up two sets of guide rails, every group guide rail all with slider sliding connection, on the slider is fixed in the spacing hole of bolt of corresponding vertical support respectively, reciprocate the inclination of adjustable oblique guide plate through the slider. The utility model discloses the simple structure is used in a flexible way, need not to build special thunderstorm impact wind laboratory and can simulate thunderstorm impact wind profile in the wind -tunnel of conventional boundary layer, has saved a large amount of financial resources, manpower, has greatly extended the research field of conventional boundary layer wind -tunnel.