The invention relates to the field of sheet metal, in particular to a sheet metal part. The sheet metal part comprises a protective structure, a fixed structure, a storage structure and a sealing structure, wherein the storage structure used for storing an article is connected to the interior of the protective structure used for containing a drawer; the sealing structure used for being inflated toperform sealing between the protective structure and the storage structure is connected to the interior of the protective structure; the sealing structure is connected with the storage structure; while the fixed structure connected to the interior of a shell enables a sheet metal drawer body to be fixed in the shell, the fixed structure is used for inflating the sealing structure, so that a gap for connecting the metal sheet drawer body and the shell is sealed, wet gas is prevented from entering the shell, and the oxidation degree of the metal article is reduced; and the sealing structure extrudes the shell and the sheet metal drawer body, so that the sheet metal drawer body can be better fixed in the shell, the phenomenon that the sheet metal drawer body shakes when the shell is collidedis avoided, air can be prevented from leaking into the shell, and the metal article can be further prevented from being oxidized.