From the perspective of media evolution,the relationship between teachers and students is in-vestigated. It is found that the media technology influences even determines the mode of teacher-student rela-tionship,and the technical and cultural characteristics of the media contribute to the different forms of teacher-student relationship. Moreover,now speaking can be regard as a physical exchange technology,and its cul-tural attributes decide that the teacher-student relationship shows the characteristics of the two-way interac-tion,intimacy and equal in oral media environment. The isolation of the print media weakens the teaching sit-uation in the different conditions,and the birth of" expert system" makes the social relations between teach-ers and students become authoritative and hierarchical. Meanwhile,the communication mode between teachers and students shows in a one-way. And the electronic media technology enables the teaching space to separate into the presence teaching space and the lack of presence teaching space,and to construct a new form of rela-tionship between teachers and students. At this time,the subjectivity of the students gradually becomes strong and the " customized teaching " becomes normal. The teacher-student communication begins to regress to a two-way interaction,and its relationship gradually inclines to a equal partnership.%基于媒介嬗变的视角对师生关系进行考察，发现媒介技术影响甚至决定着师生关系的模式，媒介的技术特点及其文化特征促成了师生关系的不同形态。口语作为交流性技术，其文化属性决定在口传媒介环境下师生交往模式表现为双向互动规律，师生关系具有亲密性、平等性的特点。文字印刷媒介的隔离性削弱了教学过程的情境创设条件，而“专家系统”的诞生使得师生间呈现出权威性、等级性的社会关系，师生交往模式以单向交往为主。电子媒介技术使教学空间分化为在场教学空间和缺场教学空间，并建构出师生关系的新形态。此时学生的主体性不断增强，“定制化教学”成为常态，师生交往方式回归主体间双向互动，师生关系逐渐趋向为平等的合作关系。
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