The invention relates to an automatic paying method, here are the details : setting an area isolated with other stations coverage settled in the wireless communication system on the payment terminal and distributing a micro-cell identifying code on this area; presetting the relationship of micro-cell identifying code and business and paying plan; wireless communication system implementing a location update action as the hand-set moves into this area from other areas and producing an location update data and recording the data. In which the location update data represents payment request and transfer can be executed according the recorded location update data. Then the successful transfer information is sent to the payment terminal that outputs a trade success signal. |