The invention belongs to the field of photo-thermal techniques and discloses an electric energy generating photo-thermal trough collector. Thermal collecting tube supports are arranged outside torsiontubes which are arranged on bottom supports, thermal collecting tubes are arranged on the thermal collecting tube supports, the thermal collecting tubes and the torsion tubes are arranged transversely, and reflector groups are arranged on two sides of the thermal collecting tubes of the photo-thermal trough collector. The multiple thermal collecting tube supports are longitudinally and sequentially arranged at intervals along the torsion tubes, and a solar photovoltaic panel is arranged between every two adjacent thermal collecting tube supports. The photo-thermal trough collector further comprises a cleaning device and is capable of generating electric energy by adoption of the photovoltaic technology.