Methodology represents the basics of Building. The scientific work as Well as its representing approaches, its forms and its methods ،all of which represent the possipility of occurring new knowledge (epistemic) activity, and its forms and methods. The method is the corner stone in it. Some researchers misunderstand this science by limiting it only to the set of methods. It represents a common area that links philosophical sciences and specialized sciences. It does not include new knowledge, rather, it shows how to attain this knowledge. Its main purpose is to turn knowledge into scientific principles and rules. Methodology consists of four levels; Philosophical methodology, General scientific, Specific (science system), and special.