The economic and efficient accomplishment of an application-specific integrated circuit design depends heavily upon the choice of the library. Therefore, it is important to build library that full fills the design requirement. Tanner Tools is a set of software for designing integrated circuits. The great advantage of Tanner is that it can provide a complete circuit design tools in desktop computers. The paper aims to create a standard cell library establishment on the 0.5 micro complementary metal–oxide–semiconductor mixed signal process based on the Tanner Tools.