Recently, special attention has been paid to the examination of the surface film formation and mapping of the Li distribution in Mg-Li alloys, which is a challenging but essential task for understanding the origin of corrosion resistance in this class of Mg alloys . On the other hand, the accurate examination of corrosion processes of Mg alloys, especially by electrochemical techniques, is still important. For this, a combination of classical electrochemical techniques and hydrogen evolution monitoring is usually applied . In our recent studies we have proposed a new approach to implement multisine dynamic electrochemical impedance spectroscopy (g-DEIS) monitoring as an expedient method to examine the kinetics of the nonstationary corrosion process of Mg alloys. We believe that this technique also can be effectively used to monitor the inhibition effectiveness of corrosion inhibitors towards Mg alloys , as was previously done for Al alloys . To our best knowledge, no attempt to examine the corrosion protection of Mg alloys containing Li by soluble molybdates has been described in the literature. Moreover, the correlation of the inhibition mechanism with the amount of Li and, consequently, the microstructure of these alloys still requires a better fundamental understanding.