RFID (radio-frequency identification) middleware lies between readers and enterprise application systems.It manages the information dataflow between them and it is very important to the enterprise application.In order to learn the data processing of RFID middleware,the RFID technology and RFID middleware's functions,features and architecture design were introduced,which summarized the current research results both at home and abroad and the data processing of RFID middleware in detail.The data processing procedure was described mainly from the aspects of data storing,data filtering,data source producing,security control,etc.From the perspective of enterprise application,a method to improve the data processing procedure was provided by introducing the ideas of gather and feedback.The improved process was analyzed and its advantages were pointed out.