Individual-soldier type portable seawater desalination device

The utility model discloses a single-soldier type portable seawater desalination device which comprises a piston assembly, a reverse osmosis membrane assembly, a water taking pipe, a fresh water producing pipe and a concentrated water pipe, the piston assembly is fixedly connected with the reverse osmosis membrane assembly; a handle assembly for driving a piston to reciprocate is arranged on the piston assembly; a water taking inlet and a concentrated water outlet are formed in the side surface of the piston assembly; the piston assembly is coated with a housing. The reverse osmosis membrane assembly is provided with a fresh water outlet lower than the end face of the assembly; the housing is fixedly connected with the reverse osmosis membrane assembly; the water taking pipe and the concentrated water pipe are respectively connected with the piston assembly; a detachable water taking coarse filter head is arranged at the non-connecting end of the water taking pipe; and the fresh water producing pipe is connec