This research applies RFID technology to warehouse management and mold management in the Plastic Injection Industry. The rationalization analysis is firstly conducted for the case company to find the introduction method of RFID technology. Afterwards, an implementation plan is simulated and the system benefit generated by RFID introduction is evaluated. The results showed that there was up to 60 percent manpower off after the RFID technology was introduced in the case company, and the RFID system effectively reduced the rate of negligence arisen from human error and moved up the whole working perofrmance. The RFID technology increased the overall synergy of enterprise process and competitive force for the case company.