Three modern preparations of fluorine gas including electrolysis cell, chemical and plasma are introduced in this paper. By analyzing the characteristics and processes of these methods, the technology of electrolysis cell approach is mainly introduced. The progress of the fluorine cell technique is the key factor for promoting the development of the preparation of fluorine gas. Firstly, it illustrates formation and development of fluorine gas generated by electrolysis cell. Secondly, the present issues and solutions of fluorine-electrolysis cell technology are discussed. Based on certain of theory and practical approaches, the merits and drawbacks of some techniques are analyzed and then the methods cited in this paper are classified. Finally, it is clear that the prosperous technique of generating fluorine by electrolysis cell should turn toward to the development and the realization of the properties of low anodic overvoltage and the automatically level gauge and control.