Abstarct: In this study, the interaction of tunneling the 2nd line of Mashhad subway with the 1st line (Shariati station) is examined at the intersections. For stress and displacement caused by drilling the station, the station excavation process is modeled by Cut & Cover method. This method of manufacturing the stations, commonly used for the construction of low depth subway stations and is used in several cases in the 1st line of Mashhad subway stations. For the central part of the station's foundation pile-raft System is used to reduce the subsidence and the effects of interacting between the station and the new tunnel. The new tunnel under the station is surrounded by candles in a distance of 20 cm from the side wall of the tunnel. In designing the second line of the tunnel which will be dug using a TBM-EPB, Safety control operations in the vicinity of the second tunnel is of great importance. So evaluating the interaction of the new tunnel and the stations and examining the subsidence surface ground in this area is of great importance. To investigate this mechanism the limited implementing three-dimensional analysis used by Abaqus6.10.1 software. Mohr-Coulomb Behavioral model is used for soil. To examine the effect of various factors influencing the interaction of new tunnels and stations, Sensitivity assessment of the geotechnical properties of the soil, the distance between the station and a the new tunnel, pressure on the face and piles has been done. The results show that pile-raft System reduces the subsidences caused by the excavation of the second line. The results show that by increasing the distance between the station and the tunnel, the interaction effects decreases. The results from sensitivity assessment of the soil properties show that by improving the soil properties on the distance between the station and the tunnel, we can reduce the subsidence caused by the excavation of the second line. The results of the effect of pressure on the front of the lower tunnels show that by changing this pressure, the surface subsidence varies at the intersection