“社会必要劳动时间”是马克思价值理论体系的中心范畴。正确地理解“社会必要劳动时间”是准确地理解和把握马克思价值理论体系的重要环节。然而,在我国理论界,对“社会必要劳动时间”的认识存在着混乱,有的甚至是错误的。为了深入理解马克思的价值理论体系,本文拟就“社会必要劳动时间”系统地谈些还不很成熟的看法。 “Social Necessary Labor Time ” is the central category of Marx 's theory of value system. Correctly understanding “socially necessary working hours” is an important part of accurately understanding and grasping Marxist theory of value. However, there is confusion and some mistakes in the understanding of “socially necessary working time” in the theoretical circles of our country. In order to further understand Marx's theory of value system, this article intends to systematically talk about the not-yet-mature view on “socially necessary working time”.