Diplomatic studies have attracted the attention of scholars, especially in the issue of consolidating international relations. Therefore, this research, which I called (Diplomatic Jurisprudence in Peace), will attempt to identify the approach of scholars in various relevant branches of knowledge, who have addressed this issue in their research and writings, highlighting and expanding this science. It was important to hold a theoretical chapter to get to know this specialization, and to explain its role, importance and methods of performance in it, then the researcher’s attempt to benefit from the applicants’ efforts in clarifying the aspects and dimensions of the study, and collecting the scattered references in the stomachs of her books and the experiences of specialists and others, and employing them in this study. In light of this, the researcher tried to present an objective vision of the phenomenon of diplomatic language so that it can be invested and benefited from in the issues of foundation and contracting and facilitating the education and service of foreign international relations, God willing. He was also keen on filling a vacancy in the field of diplomatic studies related to Sharia; He saw that a lot of effort should be exerted to make diplomacy a considered tributary of stability and prosperity in Islamic societies. In order for Islamic diplomacy to become more widely applied and widespread in the field of international relations. This study was based on the extrapolation of issues in which the opinions of scholars varied according to the multiplicity of factors of international relations and diplomacy, And the controls of their judgment on some of them with ugliness, goodness or anomalies, and analyzing the reasons for the acceptable choice in their view, whether they are technical related to the apparent transactions or other general rules, according to an applied analytical methodology that helps to understand the point of view of scholars of this art due to the nature of the relationship between a state and a state. And a people and a people, a nation and a nation, and then their approach to dealing with the other.