The utility model relates to a water-stopping device, in particular to the water-stopping device for the procedure of existing a starting well or entering a receiving well of a tunneling machine tool. The utility model discloses the water-stopping device for the procedure of existing the starting well or entering the receiving well of the tunneling machine tool, the water-stopping device comprises at least one water-stopping sleeve box with openings at the front part and at the rear part, the water-stopping sleeve box is arranged at the periphery of a door opening of an enclosure structure, and the water-stopping sleeve box is fixedly connected with the enclosure structure is a sliding manner. The water-stopping device can effectively improve the safety coefficient of the procedure of exiting the starting well or entering the receiving well of the tunneling machine tool, realize the purpose of using the same water-stopping device when exiting the starting well and entering the receiving well and further save materials and schedule. In addition, when exiting the starting well or entering the receiving well of the tunneling machine tool, the pressure in a gasbag can be regulated according to the leakage situation, and the control is simple.