Abstract: AutoTower 2.0 software is three-dimension entity software that is based on iron tower design of the software AutoCAD.In order to let both the  prevailing analysis and designing of the iron tower at home and abroad (DOS environment’s iron tower compression analysis software in mainland and Tower6.03 software of Power Line System company in American)  make full communication and mutual exchange,this paper has proposed making use of ADO technology,file flow,SQL to build and connect the three pieces of interface.Data exchange interface makes Auto Tower 2.0 different from other iron tower analysis softwave.

Key words: ADO, file stream, interface design, iron tower