Magnetic nails serve as a key component enabling the autonomous driving of an intelligent guided vehicle（IGV）in automated container terminals and will greatly affect the autonomous driving of the IGV if they are interfered by an external magnetic field. In order to mitigate the interference of the electromagnetic field generated by cables on magnetic nails，this paper analyzes the generating mechanism of the electromagnetic field in terms of design and material selection and proposes measures such as optimizing the cable selection to enhance the cable shielding effect，increasing the laying distance between the cables and magnetic nails to mitigate the interference of the magnetic field，strengthening the grounding and envelope at the top of the cables to achieve the electromagnetic shielding，and employing reasonable cabling technology to weaken the magnetic field strength of the cables. These measures can effectively mitigate the interference of the electromagnetic field generated by the cables on magnetic nails and make the autonomous driving of the IGV not affected.