In this study, oil containing sand was subjected to loading in a cyclic triaxial test system. The sand was poorly graded and fine grained, typical of that found in southern Taiwan. Tests were conducted on the pure sand, sand with an oil content of 10% by void space, and sand with three contents by weight (1.0%, 1.5% and 2.0%) of carboxymethyl cellulose (CMC) to improve the strength of the oil sand. Three relative density (Dr) were selected: 30%, 45% and 60% and confining stresses of 50, 100 and 150 kPa were used. Through consideration of these variables, the dynamic behavior of oil containing soil was studied and the potential of soil liquefaction and liquefaction resistance were analyzed