The usage of soy sauce residue has a great value,but few applications are available.The methods of extracting crude fat from soy sauce residue including squeezing methods,single solvent extraction,mixed solvent extraction and extraction assisted by ultrasound were introduced.On the basis of preliminary research,taking characteristics of soy sauce residue into account,all theoretical analysis and operational feasibilities of these methods are reviewed seriously.It also points out that removing the salt and water quickly and efficiently from fresh soy sauce residue is the bottleneck problem of the current? research.An ideal method with acetone as solvent is worth of further studying.