一证据能力是指某种事实材料能成为诉讼中的证据以认定案件事实的资格和条件，即可被准许或可被采用的能力，“何种的资料可供严格的证明，称此具有可为严格的证明资料之能力为证据能力，或称证据资格，亦即证g适格性。把证g适格即适合于法律的规定，在英美证据法中被称之为证 An evidential ability is the ability of a factual material to become evidence in a lawsuit to ascertain the facts of a case, that is, the ability to be licensed or adopted, "and which information is strictly verifiable, For the ability to strictly prove the information as evidence ability, or the qualification of evidence, that is, the identity of the card G. The card g is suitable for legal requirements, in the Anglo-American law of evidence is called the card