The invention discloses a wind tunnel test device for simulating influence of wind on a structure in a mountain area, and relates to the field of structural wind engineering. The wind tunnel test device comprises a building simulation system, a slope simulation system and a pressure measuring tube; the building simulation system is composed of a building model and a building base plate; the slopesimulation system is composed of a front slope subsystem, a building platform, a back slope subsystem and a driving subsystem, the front and back sides of the building platform are in rotatable connection with the front slope subsystem and the back slope subsystem respectively, the building model is mounted on the building platform via the building base plate, and the driving subsystem adjusts andcontrols the height of the building platform as well as the gradient of the front slope subsystem and the back slope subsystem; and the pressure measuring tube penetrates the building base plate andis laid in the building model. The wind tunnel test device can be used to overcome the disadvantage that test device at present does no research on the wind pressure characteristic of the building inthe mountain area, simulate mountain areas of different gradient and height-to-width ratio by changing the gradient of different landform simulated testers, and simulate different distribution forms of the buildings in the mountain area by changing the number and heights of building models.