There is provided a method of evaluating a clamping portion of an electric wire and a terminal, which can determine whether a clamping quality is good, or not, through simple test, and can easily test all of the clamping portions. The method of evaluating the clamping portion of an electric wire (W) and a terminal (10) includes measuring a length (L1) of the terminal (10) after clamping to detect an expansion of the terminal (10) after clamping to a length (L0) of the terminal (10) before clamping, determining that the clamping quality is “good” when the expansion falls within an allowable range between a given lower limit and a given upper limit, and determining that the clamping quality is “no good” when the expansion falls outside the allowable range.