Abstract: Based on the division of appraisers’ role in the judicial practice between Anglo-American law and the legal system in China, this article tries to discuss further on the derivation bodies of three typical statements in the field of DNA evidence application, and to distinguish the right and responsibility of appraisers clearly to prevent DNA evidence from being misinterpreted and misused. Moreover, based on the relevance, admissibility and probative value of evidence, the correct way of applying DNA evidence in the judicial practice is also discussed.

Key words: DNA evidence, appraiser, expert witness, logical reasoning

摘要：  以英美法系和我国司法实践中鉴定人角色差异为视野，深入探讨DNA证据应用领域中的三个经典命题的推导主体，明确鉴定人在DNA证据应用中的职责权限，避免DNA证据被错误解读和应用，并尝试以证据的相关性、可采性和证明力为基础，探讨我国司法实践中DNA证据正确应用的途径。

关键词: DNA证据, 鉴定人, 专家证人, 逻辑推理