The torsion deformation under drive of MFC is analyzed by establishing the simulation model of the active deformation of the deformable wing. The influence of MFC with voltage load on the active deformation of the shrinkage ratio model has been investigated by implementing ground test as the verification. The results show that the thermal-elastic analogy method is a feasible and effective method for analyzing the active deformation of deformable wing driven by MFC. The drive efficiency of MFC is related to the distance between the fixed end of the model and itself. At the same time, the loading mode and speed of voltage can be chosen autonomously.