The article presents the experimental procedure in the aerodynamic bellows applied to the billboards according to the conditions of wind parameters and existing equipment in Vietnam, presents the experimental work and the results of the scale model experiments. scale 1:30 for billboard structures. Thereby, clarifying the influence of the wind direction and the height of placing the board on the force coefficient and wind force, as a basis for proposing the force coefficient and the eccentricity of the wind force for the billboard, suitable for application to Vietnam, research results can be used to calibrate design standards