A proximity detection method for a near field communication wherein the method comprises: sending (S102, S202), by a first electronic device, a signal of a detection frame, wherein the detection frame comprises one of a first detection frame and a second detection frame, the first detection frame and the second detection frame respectively comprises at least two symbols modulated with different frequencies and the first detection frame is different from the second detection frame; determining (S104, S218) whether a second electronic device capable of performing the near field communication exists according to a received response frame; wherein the sending, by the first electronic device, the signal of the detection frame comprises: sending one of the first detection frame and the second detection frame: when a signal of the response frame replied by the second electronic device is received, switching (S208, S210) the detection frame to be sent from the one of the first detection frame and the second detection frame to the other one of the first detection frame and the second detection frame; wherein the response frame comprises one of a first response frame and a second response frame, the first response frame and the second response frame respectively comprises at least two symbols modulated with different frequencies, the first response frame is different from the second response frame, and the determining whether the second electronic device capable of performing the near field communication exists according to the received response frame comprises: increasing a first response count by 1 after receiving the response frame replied by the second electronic device; if the response frame is the second response frame, increasing a second response count by 1, and further determining whether the second response count reaches a second threshold; if yes, determining that the second electronic device is located within a range available for near field communication. sending (S102, S202), by a first electronic device, a signal of a detection frame, wherein the detection frame comprises one of a first detection frame and a second detection frame, the first detection frame and the second detection frame respectively comprises at least two symbols modulated with different frequencies and the first detection frame is different from the second detection frame; determining (S104, S218) whether a second electronic device capable of performing the near field communication exists according to a received response frame; wherein the sending, by the first electronic device, the signal of the detection frame comprises: sending one of the first detection frame and the second detection frame: when a signal of the response frame replied by the second electronic device is received, switching (S208, S210) the detection frame to be sent from the one of the first detection frame and the second detection frame to the other one of the first detection frame and the second detection frame; wherein the response frame comprises one of a first response frame and a second response frame, the first response frame and the second response frame respectively comprises at least two symbols modulated with different frequencies, the first response frame is different from the second response frame, and the determining whether the second electronic device capable of performing the near field communication exists according to the received response frame comprises: increasing a first response count by 1 after receiving the response frame replied by the second electronic device; if the response frame is the second response frame, increasing a second response count by 1, and further determining whether the second response count reaches a second threshold; if yes, determining that the second electronic device is located within a range available for near field communication. sending one of the first detection frame and the second detection frame: when a signal of the response frame replied by the second electronic device is received, switching (S208, S210) the detection frame to be sent from the one of the first detection frame and the second detection frame to the other one of the first detection frame and the second detection frame; wherein the response frame comprises one of a first response frame and a second response frame, the first response frame and the second response frame respectively comprises at least two symbols modulated with different frequencies, the first response frame is different from the second response frame, and the determining whether the second electronic device capable of performing the near field communication exists according to the received response frame comprises: increasing a first response count by 1 after receiving the response frame replied by the second electronic device; if the response frame is the second response frame, increasing a second response count by 1, and further determining whether the second response count reaches a second threshold; if yes, determining that the second electronic device is located within a range available for near field communication. increasing a first response count by 1 after receiving the response frame replied by the second electronic device; if the response frame is the second response frame, increasing a second response count by 1, and further determining whether the second response count reaches a second threshold; if yes, determining that the second electronic device is located within a range available for near field communication.