Karaki, the prominent Shiite scholars in the tenth century, was master in Fegh and and other sciences. This thinker, according to the needs of his age, has entered theological topics, especially the special Imamate. In his theological arguments Karaki has used the rational and transmitted method and used the sciences such as logic, epistemology, philosophy, literature, Usul-alfegh, etc. Among other characteristics of the Kharaki's method, is the expressing the views of sects and scholars in many positions, and criticizing them.