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For the purpose of enhancing the management level of the meter reading of power enterprises, web services based GPRS automatic meter reading system is put forward. In this paper, the characteristics of GPRS technology and Web Services technology are analyzed, and the architecture of web services based GPRS automatic meter reading system is designed. The front-end based on the GSM/GPRS network is implemented by Java multi-threading and socket technology, Master station system implemented using Web Services technology. At the lost of this paper, we will give the model design and key codes based on the latest Java Web Services specifications JAX-WS.