The invention discloses a pumped storage-type wind energy directly-driven seawater desalination integrated system. The system comprises a seawater desalination unit, a pumped storage unit, a water storage pool, an energy conversion device, a pretreatment pool and related pipes. The pretreatment pool is respectively connected to water inlet pipes of the pumped storage unit and the seawater desalination unit. A water outlet pipe of the pumped storage unit is communicated with the water storage pool. The water storage pool, the energy conversion device and the seawater desalination unit are coupled. A water return pipe of the energy conversion device is communicated with the pretreatment pool. The seawater desalination unit is driven by mechanical energy provided by a wind turbine and a hydraulic turbine so that stable fresh water output is guaranteed, and the pumped storage unit and the seawater desalination unit can be reasonably combined according to practical situation. The system has the characteristics of simple structure, high energy conversion efficiency, good stability, good reliability, operation simpleness, low investment and operation cost, and wide adaptation range, and is suitable for building of large-scale wind energy seawater desalination engineering.