The invention provides an immersed tube tunnel tube joint test piece shear-resisting structure multi-dimensional force detection structure. The immersed tube tunnel tube joint test piece shear-resisting structure multi-dimensional force detection structure comprises a pipeline joint model, the pipeline joint model comprises a model movable part and a model fixed part, and one end of the model movable part is arranged adjacent to one end of the model fixed part; first horizontal shear keys are uniformly arranged at the bottom of the first end of the model fixed part, third vertical steel shearkeys are uniformly arranged on a middle wall of the first end of the model fixed part, and first vertical steel shear keys are uniformly arranged on a side wall of the first end of the model fixed part; and different test members are arranged on the shear keys with different functions of large-scale immersed tube tunnel test members, the force condition of the shear keys can be effectively obtained. The multi-dimensional force detection of the shear keys by using large-scale immersed tube tunnel joint test pieces is more approaching to the force condition of practical engineering, immersed tube tunnel engineering joint design can be better guided, and it is ensured that the joint is safe and reliable.