Abstract: Maturing seed accumulates a large number of storage proteins and different plant species store different seed storage proteins.To understand the process of expression pattern of seed storage protein,the theoretical studies on the expression and regulation of seed storage protein and its application in the plant taxonomy,molecular breeding and expression of pharmaceutical protein in recent years were reviewed.The theoretical studies showed that the expression pattern of seed storage protein was accurately regulated,involving cis-elements and trans-acting factors.The applied studies showed that the yield and nutritional quality of crop could be greatly improved through the proper regulation of the expression of seed storage protein.Due to its stable expression pattern,seed storage protein could be used in the studies on plant taxonomy and plant systemic evolution,as well as expression of pharmaceutical proteins.