The present study is a descriptive-analytic study based on the Halliday functional grammar approach in the field of relationship between text situation and context situation, to review the obvious apocalypse discourse in the various stages of mystical experiences of Ruzbihan Baqli. “ Kashf al-asrar wa mukashafat al-anwar” is Ruzbihan Baqli autobiography that its content is based on “ the way of retelling, without the concern about transfer the mentality to the audience” . Ruzbihan Baqli, in the position of the experimenter, prefers the observation to the other stages of discovery, attempts to retelling his intuitive experiences and dreams, that most of which are based on the “ manifestation of the essence and attributes of God” through eltebas. In each of his mystical experiences in various situations, such as "awakening, a state between sleep and awakening and sleep, " he has experienced certain emotional states such as grief, confusion, astonishment, happiness and the drunkenness, regarding his spiritual talent and his viewpoint and relation relative to each participant. In the textual structure of the apocalypse discourse of this work, which focuses on the retelling of the three mystical experiences of “ addressing, manifestation, and ascension” , the main characteristic of experiences is “ incomprehensibility” , “ passive mode” and “ transience” . The specific course of the linguistic processes in various stages of the apocalypse from “ material” to “ subjective” in order to explanation the ascendant of the human from “ seeker” to the “ mortality” . In all experiments, the “ location” adverb has the highest frequency, and in each experience, audience encountered a different atmosphere. When each location changes, the circumstances and characteristics of the experience will also vary. The author is more accurate in describing locations that are relate to the primary modes of apocalypse, but the locations of occurrence of the final stages of apocalypse under the domination of mystical states cannot be described with precision. Throughout the sequential application of peripheral elements, Ruzbihan eliminates ambiguity in its speech and makes the desired information more specific and restrictive. In this way, he outlines the atmosphere of his own experience clearly for the audience.