A method and device for assisting the driving of an aircraft (AC) moving on the ground, on a taxiing circuit (CP) including a taxi line (TL) to be followed by the aircraft (AC). The taxi line (TL) has different portions (PR) forming between them intersections (IP). The device is configured to use a digital modeling of the taxi line (TL), called digital trajectory (TR), including nodes corresponding to the intersections (IP). In addition, the device includes a detection unit (4) configured to detect at least one of the intersections (IP), as well as an increment unit (6) configured to increment a counter associated with the digital trajectory (TR), after detection of the intersection (IP), the counter being designed to count a series of the nodes.