The invention provides a direct current grounding searching method with a self compensation current. The direct current grounding searching method with a self compensation current comprises: a circuit current value I is measured by a clamp DC ammeter; a DC source outputs a compensation current I through a shielded conductor, wherein the shielded conductor passes through two precise clamp ammeters successively in the opposite direction; the two clamp ammeters are used for respectively clamping two conductors at a DC system to be measured, wherein the directions of the jaws of the clamp ammeters are opposite to the direction of the compensation current; the compensation current is adjusted to enable the reading of the clamp ammeters to be approximate to zero and then the compensation current is outputted; the two clamp ammeters are connected with a data acquisition instrument, such as a wave recorder, for integration so that current mean values can be obtained by dividing integral values by the time; and the two mean values are compared, wherein a grounding point exists in the branch if the difference between the two mean values is approximate to the calculated deviation of the leakage current. The direct current grounding searching method with a self compensation current can solve the problem about insufficient range of precise clamp ammeters, and at the same time the two clamps can perform data comparison and conveniently performs measurement and comparison of the currents at different locations on different conductors. Therefore, by means of the direct current grounding searching method with a self compensation current, the DC system grounding point can be found accurately through search for the leakage current.