With the advantages of high theoretical specific capacity (1166 mAh·g^-1) and low redox potential (–2.71 V), as well as be abundant in resources and low in cost, metallic Na is expected to be used as a promising candidate for the anode material in next-generation high performance secondary batteries. However, factors such as the unstable solid electrolyte interface, unpredictable dendritic growth, and substantial volume change during plating/stripping have hampered the development of sodium metal anodes. A reasonably designed artificial interfacial layer can better stabilize the sodium metal anode, which has been extensively investigated by researchers. This paper reviews the recent advances in the protection of sodium metal anodes by constructing different types of artificial interfacial layers, including inorganic, organic, and hybrid interface layers. Additionally, it discusses the issues and underlying causes associated with sodium metal anodes, and offers an outlook on their future development.