PURPOSE: To provide a gas station system wherein a customer's feeling on troublesomeness in payment is minimized and efficiency in using machines in the gas station can be improved.

CONSTITUTION: A gas station system comprises an ID card issuing machine 14 located at an entrance for issuing an ID card with an ID number assigned, ID accepting machines 18, 20, 26, 35 located on each of working sites 15, 19, 22, 23, 32 for reading the ID number on the ID card and outputting work contents performed at the working site and ID information coupled together, and a main POS machine 30 which accepts the working contents and ID numbers output from the respective ID accepting machines for storing together the working contents per ID number Further it includes a payment machine 37 located at an exit 11 for extracting a total sum of each ID number from the main POS machine each time an ID number of the ID card is read and outputting the total sum.