Increasing population and rising traffic volume has led to the expansion of transportation networks. Underground structures are one of the most important infrastructures in transportation networks which, given their characteristics and their remarkable role, have been considered more than ever. Significant cost of construction and specific risks in the operation, have led to the proposed different methods for the implementation of tunnels. Meanwhile, tunneling in loose areas is a challenging issue in the design and construction of tunnels. In these areas, by digging the tunnel, the relaxation of the ground above the section of the excavation take place. This may results in localized or even completely degraded in excavated spaces. In the absence of control of this phenomenon, It can cause surface settlement and safety problems during construction. In addition, facilities and infrastructures may be damaged. Considering the importance of this topic, various researches and studies have been done in this regard. In this study, the researches were reveiwed and different methods of running the tunnel have been investigated in loose areas.