This article introduces the current developments and prospects of inspection technologies which are necessary for the fabrication of EUV mask with a reflective multilayer structure. It can utilize many similar procedures and instruments used in the traditional optical mask process into the design and manufacture of EUV mask one. In this article, it begins with a brief introduction and comparison, and also points out several particular aspects of EUV mask inspection. After that, it makes a further investigation about the inspection technologies throughout the fabrication of EUV mask blank. Finally, it indicates the direction of future development.