Abstract: Electromagnetic acoustic transducer (EMAT) has been widely exploited in the field of non-destructive testing due to its advantages of non-contact and designability. In this paper, a surface wave magnetic concentrate type polarization measurement EMAT (MC-PM-EMAT) is introduced. The sensor utilizes the magnetic field distribution characteristics of two magnetic concentrate type permanent magnet arrays combined with a linear single-coil structure to enable independent measurements of the in-plane and out-of-plane displacement components of surface wave elliptical polarization. Firstly, the design method of MC-PM-EMAT was proposed, and the magnetic field distribution characteristics of this sensor were analyzed to verify the magnetic flux density enhancement. Secondly, a multi-physics field coupling simulation model of the MC-PM-EMAT was established to investigate the measurement capability of the in-plane and out-of-plane displacements of the sensor, and the results show that the proposed MC-PM-EMAT boosts the measurement signals of the in-plane component by a factor of 5.17 and the out-of-plane component by a factor of 1.49, compared to that of the conventional type EMAT. Finally, MC-PM-EMAT was developed and the experimental measurement system of surface wave elliptical polarization was built to further experimentally verify the polarization measurement of MC-PM-EMAT. The proposed MC-PM-EMAT significantly improves the polarization measurement capability of surface waves and offers an important sensing test method for the characterization of mechanical properties and non-destructive testing of defects based on polarization characteristics.