The utility model discloses a method to optimize cell interference automatically, which is used to find the base station and reduce the cell interference. The utility model comprises the following steps: the base station acquires the signals of other cells, and when in judgment of cell interference, the base station determines the position relationship between the base station and the base stations of other cells producing interference, and then decides to notify the base stations of other cells to eliminate or adjust coverage overlapping according to the position relationship. When in adjustment, for the cell that cannot be a switching adjacent cell, the coverage is needed to eliminate so as to eliminate the interference signals; for a cell that can be a switching adjacent cell, the coverage overlapping is needed to reduce so as to reduce the interference signals. The utility model has the advantages that the automatic detection and optimization of cell interference can be realized, a plurality of man-power and material resources needed in traditional network optimization is saved, the cost of network operation is reduced and the network performance, accuracy and precision of detection and optimization is improved.