Soybean is major source of botanic oil and protein.There are three kinds of different structural lipoxidase isozymes which are cause of gamey smell.The gamey smell restricts use and process of the soybean.In either squeezing the oil or processing protein, taking off the gamey smell is the main working procedure and technique.Usually adoptive high temperature and the strong sour/alkali methods denaturalize protein,reduce solubili- ty Of soybean protein,and destroy many nourishment composition and vitamin.However, the gamey smell can not be removed away completely.From 1994 we studied transfer breeding and germplasm enhancement of the soybean lipoxidase genes.We obtained some no gamey smell materials by mutant at the loci with good general agreculture traits.These materials have already been approved by the crop examine committee of Heilongjiang province officially in March 2002,and used in the production and process.