A physical simulation method for structural thermal deformation based on the macro fiber composites (MFC) is proposed in this paper. The correlation equation between the thermal deformation of the cantilever beam structure and the MFC-driven deformation is established. And it is compared and verified with the finite element simulation. For the composite laminates, aiming at the simulation of the structural thermal deformation, the driving voltage of MFC is inversely calculated by using the optimized method, so as to guide the d MFC riving experiment. The results show that the simulation results are consistent with the theoretical expression for the bending deformation of the homogeneous cantilever beam. The displacement errors of the measuring points between the MFC-driven deformation and thermal deformation are all within 5% for the bending-torsional coupled deformation of the laminate, which verifies the effectiveness of the physical simulation method proposed in the paper.