Abstract: In order to promote the rational use of medium and trace element fertilizers,this study used iron,manganese,molybdenum,boron and magnesium fertilizers to treat seeds based on the soil conditions in Heihe area of Heilongjiang Province,and analyzed the effects of medium and trace element fertilizers on soybean seedling emergence,plant height and dry matter accumulation,leaf area,chlorophyll content,yield and yield component factors.The results showed that the tested iron,manganese,molybdenum,boron and magnesium fertilizers had no adverse effect on the emergence of soybeans,and no effect on the number of branches and pods.The dry matter accumulation,leaf area and chlorophyll content of each treatment were all increased compared with CK,no obviously different.Compared with CK,molybdenum fertilizer and boron fertilizer increased production by7.4% and 5.3%,reaching a significant level compared with CK;magnesium fertilizer and manganese fertilizer increased production by 11.8% and 10.0%compared with CK,reaching a very significant level.