Almost every state has its own legal system and there is a legal system in accordance with the social norms of the state. However, although states have autonomy with their own legal systems, the legal system of each state unites under larger legal systems. From this point of view, three major legal systems can be accepted; Anglo-Saxon Legal System (English Legal System, Common Law), Continental European Legal System (Legal system of European states based on Roman law), Social Legal System on (...) which Russian Federation is based. Apart from these systems, there is also an Islamic legal system with its unique structure. The reason why the Islamic legal system is unique is that it is based on both religious and rational sources. In general, the case-based method is used in the Anglo-Saxon Legal System, and the rule-based method is used in the Continental European Legal System. Which one of these two method used by Islamic law which takes its source from Qur’an and hadith well? Or is it use both methods? Our aim in this study, in addition to analysing the operation of these two methods in Islamic law from a logical point of view, is to analyse the integration of the rule-based method into the case-based method and the case-based method with the rule-based method. With this research it is to provide a logical proposal to extend the intended use of analogy in Islamic law. As a matter of fact, we think that different branches of science should come together in order to produce new suggestions in this field. (shrink)