Abstract: Integrated with the characteristics of INSIDE RFID card and actual engineering application in vehicle management system in logistic park,a communication project that transformed RS232 interface to Ethernet interface of network transmission is claimed.Network transmission adopted TCP/IP.RFID reader of INSIDE can communicate with the central computer of vehicle management system.The project passes the test of data transmission.Test results indicate that data transmission is on the safe side and it can satisfy the need of data transmission in vehicle management information system of logistic park.