The invention provides an MOX@MOFs (metal oxide-metal-organic frameworks) nanometer core-shell structure one-dimensional array film which is characterized in that the film thickness is 2 to 4 micrometers, and the film is formed by a one-dimensional MOX@MOFs core-shell structure, wherein the diameter of a core MOX nanowire is 50 to 100nm, the thickness of a shell MOFs can be adjusted between 1nm to 200nm, metal nodes and organic chains of the MOFs can be adjusted. A typical preparation method comprises the steps of setting an MOX face of a ZnO one-dimensional array film downwards, adding into a mixed solution of water in which zinc salt, cobalt salt and organic ligands are dissolved and DMF, sealing a reaction still, then heating for reacting, after reacting, washing the surface of a compound array film, and drying the film in the air. The MOX@MOFs core-shell structure one-dimensional array film provided by the invention has excellent gas-sensitive property, not only can humidity interference be selectively eliminated, but also the working temperature can be reduced and the sensitivity can be improved through a Co catalysis. Meanwhile, the film also has the advantages that the method is simple, and the cost is low.