The Chan thoughts system constitutes theory of mind?nature,theory of illusion and disillusion,theory of enlightenment,theory of freedom realm.Chan poetic discursive system is a poeticizing expression of it,including image groups such as“primary face”representing mind?nature theory,image groups such as“to seek one’s image shadow while missing one’s head”or“to escape regardless of one’s own father”symbolizing one’s spiritual bafflement,image groups such as“polishing one’s mind mirror”metaphorizing a gradual approach to enlightenment and many images characterized as beyond thisness and otherness,praise and blame,life and death,intermittence and permanence,rupa(matter) and sunya(emptiness),sacred and secularity metaphorizing an instant approach to enlightenment,image groups such as“everything presenting itself perfectly”,“moon and water reflecting each other limpidly”,“to follow destiny and let things take their own course”,“accommodating and containing each other”figuring the freedom realm.A penetrating demonstration and interpretation of Chan poetic discourses will lead a break?through progress in study of the philosophy,language and poem of Chan Buddhism.