The present invention provides a method, location service apparatus and system for acquiring a cell position, relating to the field of mobile communications. The method comprises the following steps that: a location service apparatus receives, from a first terminal, a locating request including an identifier of the cell where the first terminal resides, determines whether the cell position information corresponding to the identifier of the cell is stored in a base station database of the location service apparatus and generates a result of determining and, in the case where the result of determining is that the cell position information corresponding to the identifier of the cell is stored in the base station database of the location service apparatus, sends a first locating request to the first terminal, receives first position information from the first terminal, wherein the first position information is the position information returned after the first terminal carries out a location according to the first locating request, and stores the first position information as the cell position information corresponding to the identifier of the cell. The present invention can be applied to locate a cell where a roaming terminal resides.