Abstract: Choosing KCl:Li FA(Ⅱ) centre as a representative of color centre laser materials,we analyze the features of KCl-LiCl and other doping system related to KCl base materials from the view point of physical chemistry,in this paper.The maincharacteristics of KCl:Li FA(Ⅱ) color center laser crystal are reviewed,and thepreparation of color centerlaser crystals is briefly summarized.