The MS5． 6 and MS6． 1 earthquakes occurred respectively in Yingjiang，Yunnan on May 24 and 30，2014． In this paper，we use the waveform data recorded by mobile seismic stations (KAC) which set up in the source area after the Yingjiang MS5. 6 happened on May 24， 2014，study the shear-wave splitting characteristics of Yingjiang MS6. 1 earthquake sequence with the SAM method． The result showed that predominant polarization of fast shear-waves before the MS6. 1 earthquake consistent with the direction of regional principal compressive stress， predominant polarization of fast shear-waves before the MS6. 1 earthquake showed better consistency and smaller dispersion compared with that after the MS6． 1 earthquake． There may be a deflection for the fast shear-waves predominant polarization between the MS6. 1 earthquake sequence and foreshock sequence． We found that the time-delays generally exhibit a lower level before the MS6. 1 earthquake，and that value is relatively high after the MS6. 1 earthquake．