When Bonaparte arrived in Egypt at the end of the eighteenth century and the beginning of the nineteenth century, he was accompanied by a large group of scholars. They met with clerics from the Al-Azhar Religious Institution. There were mutual arguments and debates between both sides. After the rise of Bonaparte to power in France issued the law known as (the law of Napoleon), which reflected the impact of the Arab Islamic civilization on the French leader. The law was a tabulation of the Maliki jurisprudence in addition to the principles of the French Revolution. When local systems in Egypt failed to keep pace with modernity, Khedive Isma'il asked clerics in Al-Azhar to write Islamic law divided into chapters in the manner of Napoleon's law. They rejected his suggestion. Tahtawi translated the law of Napoleon after the deletion of the principles of the French Revolution and issued by Khedive as a civil law. After World War II, the unification of legal systems in Arab societies began to take place. Abdul Razzaq al-Sanhuri has written civil law in Egypt, Kuwait, Syria, Iraq and other countries according to Napoleon's law, taking into account the characteristics of each society. This paper deals with the impact of Arab civilization on Napoleon's law and the impact of Napoleon's law on Arab societies. The research paper monitors an aspect that has not been seen in previous studies on the influence of France and Europe on Islamic organizations, and the return of Arab societies to the recovery of these systems as French systems. The paper examines the mutual cultural influences between Europe and the Arab world since their direct contact in 1798 until the 20th centurey.