The invention provides a method and a device for identifying adjacent pseudo-random code confusion, which relate to the field of communication. The method comprises the following steps: acquiring first position information of a mobile station when the mobile station establishes a call with a reference base station in which a reference sector is positioned, and second position information of the mobile station after the mobile station establishes switching with an adjacent base station in which an effective non-reference sector is positioned during the call; and determining that the adjacent base station has adjacent PN confusion if the deviation between the first position information and the second position information is greater than a threshold and a dropped call occur in the mobile station after the mobile station establishes the switching.