以角色扮演理论为切入点，探讨混合式教学中教师角色与学生角色的辩证统一关系。从角色确定、角色表现和角色建构等角色扮演过程的三个阶段进行差异性分析，从角色标准、教学内容和教学情境等方面对统一性进行阐述。研究表明：混合式教学的师生角色存在“以师生关系为纽带”的角色定位差异，“以教学内容为主”的角色表现差异，以及“以角色互动为关键”的角色建构差异；指出师生角色均为规范性角色，师生角色互动服务于教学内容，师生角色扮演统一于教学情境等角色统一性。

Based on the role-play theory, this study explores the dialectical unified relationship between the roles of teachers and students in the blended teaching model. The difference analysis is carried out from the three stages of role-play process—role determination, role performance and role construction; the unity is explained from the aspects of role standard, teaching content and teaching situation. The study shows that in blended teaching there are role positioning differences, which are based on "the relationship between teachers and students", the role performance differences that focus on "the teaching content", and the role construction differences that "take role interaction as the key". It is pointed out that the roles of teachers and students are normative ones; the interaction of the roles of teachers and students serves the teaching content; and the roles of teachers and students are unified in the teaching situation.