High voltage cable metal sheath is usually cross-bonded in the cable cross connection box in order to reduce the metal sheath voltage. Because of the complexity of the cable laying environment, cross connection box will appear damp, water, external damage or other situations, leading high voltage cable metal sheath cross fail in link box, buried the hidden trouble to the safe operation of the whole system. This paper analyzes the features of the ground current when the failure of cross-bond in 110kV XLPE high voltage cable occurs, then models and simulates by ATP-EMTP electromagnetic transient simulation software, providing a reference for the fault detection of high voltage cable.