This study aims to test the Influence of the Banking laws and legislation support as a Moderating Variable on the relationship between the independent factors model (the availability of the qualified human resources in Islamic banks, the availability of the Islamic capital market, the employees’ willingness to convert into Islamic banks and the success of the Islamic banking experience) and the dependent factor (the success of the experience in converting into Islamic banks in Libya). Structural equation modeling is used to test the impact of the Moderating Variable (Banking laws and legislation support). Where it is depended on the method of sampling or analysis of what is known as Multiple-Groups analysis. The study found that the model of success of converting the conventional banks into Islamic in the presence of the support of the Banking laws and legislation is appropriate for the first group and inappropriate in light of the lack of support by the Banking laws and legislation for the second group.