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Compared with gravity data�� gravity tensor data usually contains more information about the anomaly�� Based on the relationship between gravity data and gravity tensor data��we apply gravity tensor data to the traditional Parker-Oldenburg density interface inverse algorithm by using transformation techniques in potential field�� The model tests show that when the grid spacing is larger or there is a certain noise in the data��using the proposed algorithm can get better inversion results�� The experimental results prove that using gravity tensor data can improve the inversion resolution of density interfaces effectively��