Concentrating solar power generating device

The invention discloses a concentrating solar power generating device. The concentrating solar power generating device comprises a concentrating lens (1), a solar panel (3), a shell (2) and a heat concentrating and radiating device (4), wherein (5) and (6) are respectively an inlet and an outlet of a water channel of the heat concentrating and radiating device. The concentrating solar power generating device is characterized in that: the solar panel is of a rectangle and a rectangular arc; the periphery of the solar panel is provided with the shell; the concentrating lens is of the rectangular arc of which the centre is thick while the edge is thin; the concentrating lens covers on the shell to form a closed cavity in which the solar panel is positioned on the focusing side of the concentrating lens; the solar panel is positioned at the bottom of the closed cavity; sunlight irradiates to the concentrating lens, is concentrated by the concentrating lens and irradiates to the solar panel to generate power; a he