To provide a method capable of quantitatively evaluating the influence of a plastic strain amount affecting a hydrogen embrittlement characteristic of a steel material.SOLUTION: A hydrogen embrittlement characteristic evaluation method is a method of evaluating the hydrogen embrittlement characteristic of a steel material to which a plastic strain is applied. This method includes: (a) a process of applying a cold or warm compression work or rolling to a test material that is made of the same steel as the steel material before the plastic strain is applied and whose thickness in a predetermined direction changes continuously or gradually in the direction perpendicular to the predetermined direction so that the predetermined direction becomes a compression direction; (b) a process of introducing hydrogen to the test material having undergone the compression work or rolling; and (c) a process of evaluating the hydrogen embrittlement characteristic of the steel material on the basis of the evaluation result of the hydrogen embrittlement characteristic using the test material to which hydrogen has been introduced.SELECTED DRAWING: None
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