On the basis of earthquake phases recorded by the Yunnan Digital Seismic Network and the Tengchong volcano broadband seismic instruments in January ～ December，2011 and the location results by Hypo2000 absolute location methods as the initial value，we obtained the locations of the foreshocks and aftershocks of MS 5. 8 Yingjiang sequence with double-difference location method． Our results show that the relocated aftershocks have a conjugate characteristic: earthquakes dominantly occurred along the Dayingjiang fault in ENE direction and another extended toward the SSE along a blind fault which was vertical to the Dayingjiang fault． The seismicity gap of aftershocks happens to be the foreshocks intensive areas．