ed and summarized the methods, summarized electrochromic mechanism for photochromic material, and anic electrochromic material, anic electrochromic materials, with each of the electrochromic material preparation methods reviewed research results are as follows: The current color mechanism is divided into six categories, including dual injection / extraction model is recognized as one of the electrochromic model. For a typical anic electrochromic materials anic electrochromic material preparation methods and discoloration mechanism were summarized, pared. And for WO3 films are proposed to improve the efficiency of thin-film color, prolong membrane life, a film discoloration shorten response time improvements.РKeywords: Electrochromic; Discoloration Mechanism; Preparation; Property Analysis.