The purpose of this study is to examine how the communication style of reading and speaking appear in Kaokatalk. Especially, this article focused on how the interactive burden shapes the communication style in Kakaotalk. The results on this study are summarized in the following two ways. Fisrt, the concept of reading in Kakaotalk has a spectrum and is divided into various actions. Second, reading and speaking in Kakaotalk are selectively performed while on hold when the speaker wants them.