Long-span roof structure is very sensitive to wind load, but there is no uniform calculation method. So for an airport terminal project, a rigid model wind tunnel test was implemented. The test results of the mean and fluctuating wind pressure coefficients of the long-span terminal roof is presented, the characteristics of the wind pressure distributions are studied, and the influence of the surrounding buildings is discussed. Time history analysis is performed and the rule of the wind-induced vibration response in different wind angles is studied. The results imply that the most disadvantageous wind angle for each roof part is the corresponding windward angle. It is confirmed that the upstream surrounding buildings have shielding effect on the terminal roof, reducing the mean wind pressure. In addition, the wind vibration response of the areas around the opening is larger than the other areas. The conclusions can be taken as a reference for the wind-resistant design of similar structures.