A physical cell identity, PCI, confusion detection method performed by a base station of a serving cell, comprising: determining (S401a) according to a preset time range condition for performing PCI confusion detection, whether the current time meets the time range condition for performing PCI confusion detection, wherein the time range condition of PCI confusion detection comprises at least one of a switch of PCI confusion detection, start time of PCI confusion detection or end time of PCI confusion detection; and if the time range condition for performing PCI confusion detection is met, sending (S401b) an instruction, wherein the instruction requests a first measurement configuration message to be sent to a first user equipment; sending the first measurement configuration message to the first user equipment, wherein the first measurement configuration message is used to request the first user equipment to perform cell measurement and report a measurement report that is obtained through the measurement and contains information of the PCI of at least one measured cell; receiving the measurement report from the first user equipment, upon receiving the measurement report, or if the number of times that the base station receives the measurement report from the first user equipment reaches the predetermined number of reception times, or, if no measurement report from the first user equipment is received within a time length of a preset measurement timer sending a measurement stopping instruction to the first user equipment; upon receiving the measurement report, sending a second measurement configuration message to the first user equipment, wherein the second measurement configuration message is used to request the first user equipment to report information containing the evolved universal terrestrial radio access network cell global identifier, ECGI of the measured cell; and receiving the information containing the ECGI of the measured cell, from the first user equipment; detecting that a PCI confusion between the measured cell and a configured neighboring cell of the serving cell exists if it is determined (S411, S412) that the ECGI of the measured cell and an ECGI of the configured neighboring cell of the serving cell are different, and the PCI of the measured cell and a PCI of the configured neighboring cell of the serving cell are the same. determining (S401a) according to a preset time range condition for performing PCI confusion detection, whether the current time meets the time range condition for performing PCI confusion detection, wherein the time range condition of PCI confusion detection comprises at least one of a switch of PCI confusion detection, start time of PCI confusion detection or end time of PCI confusion detection; and if the time range condition for performing PCI confusion detection is met, sending (S401b) an instruction, wherein the instruction requests a first measurement configuration message to be sent to a first user equipment; sending the first measurement configuration message to the first user equipment, wherein the first measurement configuration message is used to request the first user equipment to perform cell measurement and report a measurement report that is obtained through the measurement and contains information of the PCI of at least one measured cell; receiving the measurement report from the first user equipment, upon receiving the measurement report, or if the number of times that the base station receives the measurement report from the first user equipment reaches the predetermined number of reception times, or, if no measurement report from the first user equipment is received within a time length of a preset measurement timer sending a measurement stopping instruction to the first user equipment; upon receiving the measurement report, sending a second measurement configuration message to the first user equipment, wherein the second measurement configuration message is used to request the first user equipment to report information containing the evolved universal terrestrial radio access network cell global identifier, ECGI of the measured cell; and receiving the information containing the ECGI of the measured cell, from the first user equipment; detecting that a PCI confusion between the measured cell and a configured neighboring cell of the serving cell exists if it is determined (S411, S412) that the ECGI of the measured cell and an ECGI of the configured neighboring cell of the serving cell are different, and the PCI of the measured cell and a PCI of the configured neighboring cell of the serving cell are the same.