The utility model aims to provide a miniaturized malleation distillation sea water desalination, include for water preheater, the water -feeding pump, an evaporator, catch water, condensers, the waterpump congeals, the heat exchange tube in the water preheater is given to the thin cross current of evaporimeter, the delivery port of giving water preheater passes through the heat exchange assemblies in the water -feeding pump connection evaporimeter, the steam outlet that catch water's import was installed at the evaporimeter, the shell side import of catch water's export intercommunication condenser, the tube side of condenser passes through circulating water pump circulation low temperature seawater, the shell side exit linkage of condenser congeals the water pump, the exit linkage that congeals the water pump discharges the pipeline, it feeds through fresh -water tank and by pass line respectively to discharge the pipeline. The utility model discloses not only compact structure, control are simply, maintenance space is little in the installation, improves energy utilization moreover, produces the rate of recovery of water, has reduced the investment of equipment, has reduced theconsumption of the energy, have improved the reliability and the economic nature of device greatly.