The embodiment of the invention provides a detecting method and device of cell covering direction abnormities and relates to the field of communication. The accuracy of cell covering direction abnormity detecting can be improved, and human and material resources can be saved. The method comprises the steps that according to network engineering parameters, the directions of adjacent cells of a cell relative to the cell and the included angles of horizontal direction angles of the adjacent cells are determined; according to the directions of the adjacent cells of the cell relative to the cell and the included angles of the horizontal direction angles of the adjacent cells, the back direction adjacent cell of the cell is determined from the adjacent cells, and non-overlapping coverage area planning is carried out on the back direction adjacent cell and the cell; the judging ratio of the back direction adjacent cell is computed, and the judging ratio is used for representing the deviation degree of the covering direction of the cell; and if the judging ration is larger than or equal to a preset ration threshold value, the fact that the covering direction of the cell is abnormal is determined. The method is used for a cell covering detecting situation.