The effects of different pulsed magnetic field parameters on the solidification microstructure and mechanical properties of Mg-Zn-Zr-Gd alloy were investigated.The results reveal that the solidification microstructure and mechanical properties of the alloy are obviously improved under the condition of pulsed magnetic field. With the increase of pulsed voltage（0～300 V） or mould preheating temperature（200～600 ℃）

the grain size in the alloy is decreased gradually. With the increase of pulsed frequency（0～10 Hz）

the grain size of the alloy is decreased firstly and then increased. With the pulsed voltage of 300 V

the pulsed frequency of 5 Hz and the mould preheating temperature of 600 ℃

the mechanical properties of the alloy present desirable

where the compressive strength and the compression rate of the alloy reach 271.35 MPa and 22.5%

resepctively. Compared with those of the alloy without pulsed magnetic field treatment

the compressive strength and compression rate of treated alloy are increased by 28.4% and 14.2%

respectively.