The right Red river dyke has a crucial role to protect Hanoi capital from flooding. In some dyke locations, however, the foundation consists of shallow fine sandy layers which can easily be liquefied during strong earthquakes. Hanoi city is situated in the region of Red river-Chay river fault where some strong earthquakes with maximum magnitudes of 5.5 degree have occurred in the past. Although Hanoi is now in the silent period, but the seismic activities may increase in the future (Xuyen, 2004). Liquefaction caused by strong earthquakes has seriously damaged river dykes in the world in some typical failures such as excess settlement and instability. Soil liquefaction describes the behavior of saturated sandy soils that, when undrained loaded, suddenly suffer a transition from a solid state to a liquefied state. The excess porewater pressure builds up causing soil strength decreased, and finally the soil becomes liquefied. To investigate the liquefaction potential of soil, the simplified procedure (Seed and Idriss, 1971; Youd el al., 2001) using the insitu soil tests such as SPT, CPT has been applied extensively. This study aims at evaluating the liquefaction potential of dyke foundation of right Red river dyke, from K73+500 to K74+100 based on the geotechnical investigation data (WRU, 2015)