Radio Frequency Identification (RFID) is expected to be widely used in the future, as it can be embedded into everyday items as RFID tags. Using RFID technology, enterprises can share real-time data about products with trade partners over the Internet. Application Service Provider (ASP) provides services for clients in a central managing way by Internet. Users who subscribe the ASP service do not need to pay much attention about the deployment, integration, access, training, management, and support of applications, because all these are done by ASP. According to the difficulties of lacking of funds and expertise for implementing RFID and complicated RFID system construction the enterprises encountered, we focus on a solution to integrate RFID system with enterprise application system based on ASP model.