The present invention relates to nano-membrane filter and a manufacturing method for water treatment using the metal mesh, using a laser to the metal substrate to form a plurality of through the hall unit cell is provided with a metal mesh, an anodizing the metal mesh was coupled to a metal disc used to support, sikidoe formed through the anodic oxidation on the metal disk, the production of nano-membrane filter for water treatment using the metal mesh to form a nanopore in the hole feature in a unit cell corresponding portion of the metal mesh and how the technical base. And, the present invention provides a metal original plate capable of anodizing; Using a laser to the metal-based substrate a plurality of through-hall unit cell is formed, and the metal mesh bonded on one side or both sides of the metal disc is a support; Being formed by anodic oxidation on the internal electrolyte is charged anodizing device, the hole shape of the nano-pores formed in the metal disc of the unit cell corresponding portion; nano-membrane filter for water treatment using a metal mesh that is configured to include also the technical gist It shall be. Accordingly, high-precision high-power femtosecond or by utilizing picosecond laser, creates a metal mesh with precision having a grid structure of various shapes, so that the fabricated metal mesh to form a peroxide oxidation of the hollow form of aluminum or titanium, such as valve after the metal mesh consisting of a plurality of unit cells (unit cell) in the metal disc (substrate) and coupled by a thin metal disc produced by the combined one-piece construction, anodizing an anode of the hollow form on such a structure via a (anodizing) oxide the form to produce a nanostructured membranes durable reinforced arranged in a systematic form, there is the advantage that it is possible to use filters for water treatment and the like.