Abstract: In this study,three salttolerant strains (A₂, A₄, A₇) were isolated from 6 months preserved rapeseed cake compost.The three strains can grow by taking rapeseed cake as the nitrogen source under the salt concentration of 10%.By molecular biology and phylogenetic analysis,strains A₂ and A₄ belonged to Bacillus amyloliquefaciens and A₇ was identified as Bacillus badius.These bacteria had showed some ability to degrade rapeseed cake in the single strain solid fermentation test.

Key words: rapeseed cake, protease activity, salt tolerant, fungus stain identify, single-strain fermentation