This paper presented a small-sized shaking table experiment of rock-filled embankment and the purpose of this experiment is attention to stability in seism. The rock-filled embankment located in stage fluctuation zone of reservoir. The experiment confirmed that water was a critical factor during the highway embankment failure. The inside embankment slope is failure at first before the water level is raised and the outside slope will be failure with the development of shaking. However, the outside slope is failure at first in the condition of high water level. There are strong scouring and undercutting effects during shaking.