Magnesium alloy has the advantages of high specific strength

high specific stiffness and good casting performance. It is the lightest structural material and has a good application prospect. In recent ten years

magnesium alloys with long period stacking order（LPSO） structure have attracted more and more attention due to their unique microstructure and excellent mechanical properties in Mg-Y-Zn ternary system. The structure of LPSO phase in Mg-Y-Zn alloy is characterized by periodic stacking faults

accompanied by the enrichment of Zn and Y atoms on specific atomic planes. Because of the large size

the strength of LPSO phase can be improved by short fiber strengthening mechanism. The microstructure and mechanical properties of Mg-based alloy containing LPSO phase can be significantly improved by adding different alloying elements

which can refine the grain structure and mechanical properties of the alloy. The effects of different alloying elements on the microstructure and properties of Mg-Y-Zn alloys containing LPSO phase were reviewed

and the research status in this field was further summarized

which could provide useful references for researchers in related fields.