Abstract: In order to determine the population location and population movement trend after the earthquake with magnitude 4.6 occurred on May 22nd, 2016 in Chaoyang County, Chaoyang City, Liaoning Province, 57 890 mobile location information in the intensity radius was extracted, collected and sorted. Population data changes according to different times and different locations were analyzed, and the population track map and emergency evacuation route map were drawn in order to visualize the collected location data. The study may provide an effective way to obtain the population data after the earthquake and provides technical support for the post-earthquake disaster assessment and emergency services.