The invention belongs to the field of wind fields, and particularly relates to a multi-vortex-ratio tornado simulation device. The multi-vortex-ratio tornado simulation device comprises a simulation device body. A flow guide plate is arranged in the simulation device body. An angle adjusting mechanism used for adjusting the angle of the flow guide plate and changing the vortex ratio is further arranged in the simulation device body. The angle adjusting mechanism used for adjusting the angle of the flow guide plate is arranged inside the simulation device body. The speed direction of an airflowentering an organic glass cover is changed through the angle adjusting mechanism, so that the vortex ratio of the tornado is changed. The angle adjusting mechanism rotates to drive the flow guide plate to rotate together, so that the complicated step of independently adjusting the flow guide plate is avoided. The error of manual adjustment is reduced. The wind speed of an exhaust fan can be measured. Angle scales are arranged in an arc-shaped groove, and the inflow angle can be read. The height of the inflow area is also known, so that the vortex ratio is calculated. Meanwhile, the replacement of the flow guide plate and a base is avoided.