Through the wind tunnel test by section models with a scale ratio of 1/6 for the 1V and 2V flat single-axis tracking photovoltaic， the influences of inclination angles （-60° to 60°）， damping level， and gap between photovoltaic modules on the wind vibration characteristics of the structure are investigated. Results indicate that 1V exhibits obvious torsional flutter at inclination angles from -30° to 30°， while 2V exhibits such flutter at ±10°， ±20°， and ±30°； when the absolute value of inclination angles is increased for the two types of photovoltaic， the critical dimensionless wind speed of structural flutter first decreases and then increases； the maximum difference exceeds 3.87 times （1V） and 2.45 times （2V）， and under identical operating conditions， the negative inclination angles perform better than the positive inclination angles on the flutter； it is recommended to set 0° as the wind protection angle of the structure； when the damping ratio is increased， both 1V and 2V's flutter performance improve， although 1V's improvement in flutter performance is less sensitive to damping than 2V's. The gaps between photovoltaic modules have virtually no effect on the flutter performance of the structure.