十八届四中全会作出了“四个全面”的部署。本文试从档案的基本属性入手,就档案在依法治县中的作用及档案部门如何服务于法制建设,作以下探讨。一、档案的原始凭证性是依法治县的重要基础档案的原始凭证性是档案的客观真实性在具体事物上的反映。档案是社会活动的真实记录,保存了事实真相和诸多印迹,如手迹、签署、照片、录像带、印章等, The Fourth Plenary Session of the 18th CPC Central Committee has made “four comprehensive” arrangements. This article tries to start with the basic attributes of the file, and discusses the role of the file in the county according to law and how the file department serves the legal system construction. First, the original document credentials is an important basis for law-based county of the original document is the authenticity of the file objective reality in the specific things on the reflection. File is a real record of social activities, save the truth and many imprints, such as handwriting, signatures, photos, videos, seals, etc.,