At present, the data transfer protocol of vending machine monitor system in our country is not unified. There is no compatibility in these management platforms developed by different vending machine factories. To tackle this problem, a vending machine monitor system based on EVA-DTS(European Vending Association Data Transfer Standard) and GPRS(General Packer Radio Service) is researched and designed. This paper completes the network construction between vending machines and data center by the use of GPRS，builds the data format of information by the use of EVA-DTS，and finally works out the monitor system which is real time and safe. The system ensures the steady communications between vending manchines and data center. It is easy to help managers run the machines and good in its compatibility. It can handle any vending machine which obeys the EVA-DTS.