戴震是我国十八世纪中叶著名的思想家,他的“尽实致知”的认识论思想是其义理之学系统的重要组成部分。本文从“学贵扩充,重问学”、“重行必先重知”以及“去私与解弊”三个层面,对戴震关于获取真理的途径进行了详细的阐述,成为戴震义理之学系统中的“网上纽结”,并对其义理之学系统中提出的“闻道”、“闻义理”的价值目标提供了方法论上的支持。 Dai Zhen is a well-known thinker in China in the middle of the eighteenth century. His epistemological thinking of “giving truth to reality” is an important part of his system of righteousness. This article elaborates on Dai Zhen’s ways of obtaining truth from three aspects: “Extensions to learn your knowledge, revisit learning,” “revisits knowledge first, and disinterested and consults”, and then becomes a system of Dai Zhen’s theory of righteousness The article also provides methodological support for the value target of “Wendao” and “Wenyi Li” put forward in the system of his theory of righteousness.