Abstract: This research aims at revealing part of the relationship between the Traditional Central Bank and The Islamic Banks where the researcher had explored one of the Central Bank supervision tools for the Licensed Banks. The legislations that organize the execution mechanism, then revealing the job equivalence with the Islamic Banks, this job is: “the last lending option”. The researcher had reached to a statement concerned in not benefiting the Islamic Banks from the supervision tools applied by the Central Bank on the Islamic Banks, especially, the function of last lending option and presenting the solutions and substitutes that enable the Islamic Banks in getting the needed benefit from the job, without being contradicted with any for the Islamic Banks and Central Banks morals.