A kind of Metro tunnel tilting detection system based on embedded system is developed. The detailed design of the data

acquisition terminal, the embedded system terminal and transmission and communication of the detection system are presented in the

paper. The overall design and realization of the detection system are presented, with the focus being placed on the embedded

terminal instrument. Finally, the embedded operation system of LINUX is installed to the hardware of this detection system and the

software and hardware of the detection system are tested. The limits of the original instruments are overcome in the detection

system and the design targets are reached.