Deformation of displacement deformation. The anchor head of the multi-point displacement meter drives the measuring rod, and the measuring rod pulls the displacement meter to produce displacement deformation. The deformation is transferred to the vibrating wire displacement meter and converted into changes in the vibrating wire stress, thereby changing the vibration frequency of the vibrating wire. The multi-point displacement meter uses the SZZXNXX series multi-point displacement meter to observe the displacement along the drilling axis.