Academic writing is not completely objective or impersonal.Academic writers employ multiple discourse strategies to expound their views and stance,to create a harmonious dialogue space and a good interaction with readers,and ultimately to guide readers through an argument and towards a preferred interpretation and acceptance.Based on the model of interaction in academic discourse,this paper explores the most common interaction strategies in academic writing in terms of hedges,construction of authorial identity,and implicit writer-reader interaction.It is found that different disciplines may have respectively preferred writing style,and teachers should draw students' attention to those disciplinary differences in writing norms and conventions to raise their "reader awareness",so that the students can learn how to make an assertive statement and promote their research through appropriate interaction strategies in the writing process.