Abstract: <P class=MsoNormal><SPAN lang=EN-US>Potassium-magnesium sulphate fertilizer,is a new potassium fertilizer product containing middle elements,such as magnesium and sulfur.It is made only by physical extraction method or by directly removing impurities either from salt lake bittern or solid potassium-magnesium salt mine.It is a new generation of potassium sulfate product and it is</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"">&nbsp;</SPAN><SPAN lang=EN-US>also</SPAN><SPAN lang=EN-US> an ideal fertilizer for balanced fertilization.Applying potassium-magnesium sulphate fertilizer can raise the crop yield and improve crop quality effectively.Along with the development of domestic modern agriculture,potassium-magnesium sulphate fertilizer is facing good development opportunity now.Product standard,production methods,current situation in China,applying effect,and some market prospects about potassium-magnesium sulphate fertilizer were introduced and some proposals for the development potassium-magnesium sulfate fertilizer industry in China were put forward.<BR></SPAN></P>