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In this present work, Pb was applied in the Mg97Zn1Y2 alloy to improve its microstructure and properties, using conventional casting methods. The microstructure and properties of the Mg97Zn1Y2 alloy and Mg97Zn1Y2-xPb(x=0.6wt.%, 1.2wt.% and 1.8wt.%) alloys were observed by optical microscopy, scanning electron microscopy method and analyzed by X-ray diffraction, hardness and strength measurement and electrochemical testing. After adding Pb to the Mg97Zn1Y2 alloy, a new particle phase Mg2Pb was identifi ed along the grain boundaries, and dendrites were refi ned. In addtion, the hardness of Mg97Zn1Y2-xPb(x=0.6wt.%, 1.2wt.% and 1.8wt.%) alloys was higher than that of the Mg97Zn1Y2 alloy; with the increase of Pb content, the hardness of the alloy increased fi rst and then decreased, followed by a fi nal slight increase, and reached a maximum of 89.1 HV when the Pb content was 0.6wt.%. The strength of the alloy increased fi rst and then decreased as the Pb content increased. Moreover, adding a small amount of Pb to the alloy can effectively inhibit corrosion, and Mg97Zn1Y2-0.6wt.%Pb exhibits the best corrosion resistance ability.