This paper realizes the design based on LPC2119 single chip processor for refueling IC card controller, through the installation of equipment in the existing filling machine, can not only make the refueling machine with the functions of IC card refueling and IC card clearing, at the same time, fuelling record and some configuration information can be stored in the local of ferroelectric memory. For the transformation of gas station, don’t need to replace the expensive refueling machine, only need to add an IC card controller based on the existing filling machine, thereby greatly reducing the cost of upgrading the gas station, but also laying the foundation of the next step of information upgrade for gas station.