A terminal, comprises an electric wire connecting part having a core wire barrel part that crimps a core wire exposed in one end of an electric wire, the core wire being made of a first metal; wherein the electric wire connecting part is made of a second metal whose ionization tendency is lower than that of the first metal, wherein the electric wire connecting part is plated with a third metal whose ionization tendency is between the first metal and the second metal so that a plating layer made of the third metal is formed on the electric wire connecting part, and wherein the core wire barrel part is crimped so as to break down the plating layer formed on a connecting surface of the core wire barrel part on which the core wire is mounted.