This study argues that discourse, whatever its genre, is inseparable from the power of imagination; accordingly, trying to study the power of the imagination in discourse, through the examination in identifying the key concepts of the imagination, and then relying on the semiotics in the approach of discourse, to move from the imaginary speech to the imaginary in the speech, and identifying the relation between them ,and ultimately to highlight the impact that will leave on the transition on receiving and interpreting the discourse.