In order to solve the problem of empty container reposition considered foldable containers, the key factors affecting the use of foldable containers are found out. The mixed integer linear programming model is used to compare the total transportation cost whether install fold/unfold equipment or not. By the sensitivity analysis, factors include installation cost, transportation cost, lease cost, and storage cost, the fold/unfold cost could affect the economy of foldable containers by different degrees. It shows that transportation cost is a key factor affecting the use of foldable containers. When the transportation cost increased by 20%~40%, the total transportation cost of foldable containers in empty container transportation increased by 12.82%, 17.65% and 23.47%, respectively, while the total transportation cost of non-foldable containers increased by 15.86%, 24.34% and 29.06%, respectively. In conclusion, foldable containers is affected by many factors, and it is more economical to use foldable containers with the increase of transportation cost and reduce of the installation cost.