This book studies the phenomenon of discourse misunderstandings. The author collects rich corpus examples and consults study results of pragmatics, modern rhetoric, discourse linguistics, sociolinguistics, psycholinguistics, cognitive linguistics and other related disciplines. Comprehensive research is carried out from 5 aspects: nature of misunderstanding, classification, reason and regulation. It is intended to deepen the understanding of the rules and features of discourse communication and guide people to establish detailed and effective solution against discourse misunderstanding.