At present RFID indoor positioning data visualization methods are simple and the visual effect is not ideal. To solve this problem, a method is put forward, which can make RFID indoor localization algorithms implement in a geographic information system. By overlaying the CAD floor plan with the outdoor maps, every indoor space positioning result has a unique geographic coordinate. To combine RFID indoor positioning technology with the real geographic environment information, the calculating coordinates are visualizing displayed by using the geographic information system. Real-time targets positioning and the visualization display of RFID indoor positioning data are realized through building the RFID indoor positioning system which is based on spatial geographic coordinates. System test results indicate that this technology can achieve ideal indoor positioning data visualization effect under well indoor positioning precision.