Abstract: Liquefaction-induced sand boils were observed in the Sinhua District, Tainan during the 1946 Xinhua Earthquake. Liquefaction phenomena were observed in the same area following the 2010 Jiasian Earthquake. More re-liquefaction sand boils occurred after the 2016 Meinong Earthquake. The locations of sand boil craters induced by the Taoyuan and Meinong earthquakes were overlapped. After the Jiasian Earthquake in 2010, borehole drilling and cone penetration tests were conducted in the region. Similar investigations were repeated following the Meinong Earthquake in 2016. This study examines the soil layer characteristics and evaluates the liquefaction potential based on the CPT sounding at different time periods.