A method for generating a map. The method comprises: acquiring current position information (302) of a target device (301) and a pre-generated electronic map (304), wherein the central position of the electronic map (304) is the position represented by position information of the target device (301) and acquired when or before the electronic map (304) is generated; and in response to the determination that a current position (302) represented by the current position information (302) meets pre-set adjustment conditions, using a new thread to execute the following adjustment steps to generate an adjusted electronic map (306): generating a new electronic map (305) with the current position (302) as the central position and adjusting the pre-generated electronic map (304) according to the new electronic map (305).