Hungarian designer, István Orosz is a creator who has gotten many awards internationaliy. The unique style works of graphic design, poster and animated film in the specialized competition fields such as First prize at the international poster biennial in the Lahti, special prize at the international poster biennial in the Warsaw, ICOGRADA-prize at the international poster show in the Chaumont, Golden Bee-prize at the international poster biennial in the Moscow has several remarkable manifestations. István Orosz always uses illusionistic concepts. To express tricks of perspective, the skills of optical illusion. In addition, he often uses traditional printing techniques of characteristic culture such as woodcutting and etching to combine with posters and illustrations which has research studying values for the related creators.The study process researches Orosz's works a t the 1974s to 2002s through several of related viewpoints of Deconstruction of Postmodernism, that uses the Ihab Hassan's theories and Jacques Derrida's concepts of defférance, graft as a basis for understanding work natures and explores work springboards of inner, outer creation idea, form to next one step which has appropriate analysis and critique in the process. So I compress six points as follows which is the key feature of Orosz's work: First of all, mixed objects result in a ”pun” image. Secondly, destruction among his consciousness and his ”forced” combination. Thirdly, he uses relationship laws or repetitive elements. Fourthly, he often transforms structures of three-dimensional space. Fifthly, he uses logical reasoning and experimental observations. And lastly, his humor images of advertising draws on techniques of metonymy and metaphor.