“对话理论”和“互文性理论”是语言异质性研究的两种重要理论,“对话理论”是“互文性理论”的前文本,而“互文性理论”是对“对话理论”的吸收与移位。本文从不同的理论背景和理论意图入手,通过对“对话理论”和“互文性理论”在“话语与文本”、“人本主义与文本主义”两方面异同的论析,揭示互主体性到互文性是从主体到客体,从主观到客观的转变过程。 Theory of Dialogue and Theory of Intertextuality are two important theories of linguistic heterogeneity. Dialogue Theory is the first text of the theory of intertextuality. Literary theory “is the absorption and shift of ” Dialogue Theory “. This article begins with different theoretical backgrounds and theoretical intents. By comparing the theory of dialogue theory with the theory of intertextuality, this paper analyzes the differences between ”discourse and text“, ”humanism and textualism" , Revealing that inter-subjectivity to intertextuality are the process from subjectivity to objectivity and from subjectivity to objectivity.