A method, system and device for eliminating intra-pair skew are disclosed. The method includes: measuring a phase difference between the received differential signals as a transmission delay difference; and compensating delays of the differential signals using the transmission delay difference, to eliminate intra-pair skew of the differential signals. A phase difference measuring apparatus is used to measure a phase difference between the differential signals as the transmission delay difference, so that the transmission delay difference may be adjusted according to the phase difference. Therefore, the procedure for eliminating intra-pair skew is effectively simplified, and the effect of adjusting the transmission delay difference is improved.