Suhrawardi is among the philosophers who, compared to other philosophers, developed his intellectual system in an innovative manner. Suhrawardi’s illuminative intellectual system is the result of his thoughts in philosophy and mysticism, and the ultimate of his illuminative school is to achieve the station of mystic perception and theosophy using intuition and reasoning. The pure soul is an important pillar in the wayfarer’s intuition; and since the soul has descended from the world of the dominant lights to the world of nature, it may have diseases just like the body. In his treatises, the Master of Illumination opened a new door in philosophy by discussing the disease of the soul, and sought to provide a mystical and ethical solution for the treatment of the human’s rational soul through his illuminative way of thinking. Suhrawardi’s method for treating the diseases of the soul is expressed as an allegory because it is considered as a part of his mystical materials; and it is regarded as a moral matter because it is a prescription for all wayfarers. By recognizing the symbols in Suhrawardi’s allegorical treatises, we can identify his moral way of treating the diseases of the soul.