The invention discloses a solar energy condensing electricity-generating device with a summit-cutting curve condensing lens, which comprises a plurality of solar energy condensing electricity-generating modules and a sun-pursuing track bracket system for installing the solar energy condensing electricity-generating modules a, wherein the solar energy condensing electricity-generating modules comprise a plurality of solar energy condensing electricity-generating units which are arranged in a matrix way, the solar energy condensing electricity-generating units comprise summit-cutting curve condensing lenses and condensing cells which are arranged in the condensing areas of the summit-cutting curve condensing lenses; and each condensing cell of the solar energy condensing electricity-generating modules is connected with each other in series to outwards output electric energy. By adopting the summit-cutting curve condensing lens, the solar energy condensing electricity-generating device leads the solar energy condensing lens not only to have the optical advantage of a curve fresnel lens but also to have the machining advantage of a plane fresnel lens, which is simpler than that of the curve fresnel lens, thereby reducing the machining cost, improving the condensing effect, and greatly increasing the cost performance thereof.