The balconies of fourth-generation buildings are covered with a large number of vegetations, resulting in a noticeable alteration of their aerodynamic profiles. The airflow is disturbed by the vegetation, leading to more complex variations in wind pressure on the building surfaces. To investigate the influence of vegetations on the non-Gaussian characteristics of wind pressure on high-rise buildings, rigid model pressure tests were conducted to analyze the probability distribution of extreme wind pressures and standardized wind pressure coefficients on the building facade under different coverage areas of vegetations. Empirical criteria and distribution characteristics for non-Gaussian wind pressures were provided, revealing the influence of vegetation on extreme wind pressures on the building facades. The results indicate that the presence of vegetations changes the separation point position of incoming flow on the windward side of the building, causing the edge measurement points to transform from non-Gaussian to Gaussian. Conversely, crosswind wind pressure shows non-Gaussian, which is less affected by vegetations. The extreme wind pressure on narrow surfaces is less affected by vegetations, while vegetations arranged on relatively wide facades have a greater impact on the flow field in the area. The reduction of extreme wind pressure is more significant under different vegetation coverage rates. Furthermore, the effectiveness of greenery in reducing extreme wind pressures initially increases with the coverage area, reaching its maximum reduction effect at a coverage of 13.5%. The results can provide reference for wind-resistant design of similar structures.