The legal system for pre-contracting negotiations Pre-contracting negotiations are an essential stage in the contracting process, since the contractual balance of the contract to be concluded depends on the proper conduct of these negotiations. The Omani and Jordanian legislators did not regulate the stage of preliminary negotiations for contracting in the civil / civil transactions law, neither in terms of their concept nor their legal nature, nor did their provisions govern them. This requires recourse to the traditional rules of commitment theory for applying this type of contract. This study is intended to shed light on this important subject in our time, especially in light of the use of modern means of communication in the negotiations. The study attempted to answer the following question: Are traditional rules applicable to preliminary negotiations sufficient, or should some legal rules be developed to suit their nature? The study was preceded by a number of conclusions and recommendations, which were confirmed at the end of the study. The most important of these are the following: The Omani and Jordanian legislators must organize the preliminary negotiations according to legal rules commensurate with their nature, especially in light of modern electronic means through which to negotiate in our age.