Research conclusions：Based on the absorption of the foreign advanced technologies, the researches were done on localization of the safeguard system. The improved system can safeguard the person to access into working chamber of TBM by using automatic pressure maintaining system, double airways and double chamber man-chamber with air pressure transfer chamber. Now with all necessary configuration technologies for the safeguard system mastered by us, the air pressure transfer chamber and its safety controlling system with our own intellectual property right shave been developed.