The invention relates to the technical field of solar utilization and particularly relates to a comprehensive utilization system of concentrating solar photovoltaic generation and water purification. The system consists of a condenser, a dirty water tank, a clean water tank, a combined receiving device for supplying electric energy and treating dirty water to supply clean water, pipelines for connecting the dirty water tank, the combined receiving device and the clean water tank, a water pump for driving the dirty water to enter the combined receiving device to be treated, and an electrode lead for outputting electric energy generated by a condensation solar battery in the combined receiving device. The system provided by the invention utilizes the condensation solar battery to efficiently respond the wave band of sun light to generate power, and simultaneously reuses the ultraviolet wave band of the sun light to treat the dirty water, so that the solar energy can be economically, efficiently and comprehensively used. Furthermore, the problem that generation efficiency is decreased due to temperature rising of the condensation battery, which is caused by radiation in a non-response range or a low-efficiency response wave band, can be avoided; more energy sources can be obtained at the same cost of the condensation system, so that the energy cost is reduced.