Variations of Vertical Total Electron Content(VTEC)in the ionosphere are investigated around the time of the Ms7.0 Lushan earthquake.A time-series analysis shows an anomalous VTEC increase 15 days before,as well as some anomalous VTEC decreases 5 days before and 8 hours after the earthquake.Each of these anomalies lasted more than 4 hours and drifted from east to west.The anomalous increase 15 days before the earthquake is significantly larger than the solar-terrestrial background noise,and is thus considered to be probably related to the earthquake. Variations of Vertical Total Electron Content (VTEC) in the ionosphere were mapping around the time of the Ms 7.0 Lushan earthquake. A time-series analysis shows an anomalous VTEC increase 15 days before, as well as some anomalous VTEC with 5 days before and 8 hours after the earthquake. Each of these anomalies lasted more than 4 hours and drifted from east to west. The anomalous increase 15 days before the earthquake is significantly larger than the solar-terrestrial background noise, and therefore considered to be probably related to the earthquake.