A gas station management system according to the present invention includes a flow sensor installed inside a oil storage tank in a gas station and measuring a flow rate, a door sensor installed in the oil storage tank door to detect whether the door is opened or closed, A vehicle identification device installed in the gas station and identifying a predetermined oil supply vehicle entering the gas station; A gas station management server, and an integrated operation server that are installed in the gas station and scan a predetermined purchase slip presented by a driver of the oil supply vehicle entering the gas station. Wherein the service station management server comprises: flow rate measurement information received from the flow rate sensor; door opening / closing information received from the door detection sensor; authorizer identification information received from the license identifier; vehicle identification information received from the vehicle identifier; And a control unit that collects the scan information received from the scanner and transmits the scanned information to a predetermined POS apparatus inside the gas station and outside the gas station and determines whether or not the oil has been loaded into the oil storage tank by the supplied purchase slip, Whether or not the oil is stored in the oil storage tank as much as the flow rate described in the applied purchase slip and notifies the terminal registered in advance in the event of an abnormal situation of the abnormal situation.
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