With the wide application of large flexible solar wings in new generation spacecraft, the demand for real-time monitoring of the displacement field induced by rigid-flexible coupling dynamics is becoming increasingly prominent. Aiming at the limitation that the existing displacement field reconstruction studies are mostly based on the static working conditions and are difficult to adapt to the complex dynamic excitation of the spacecraft, this paper proposes a dynamic displacement field reconstruction method based on the hybrid coordinate method and the assumed modal method. By analyzing the rigid-flexible coupled spacecraft dynamics model, a high-precision reconstruction algorithm for the global displacement field of the solar wing is constructed by combining the modal analysis techniques. The method can realize real-time reconstruction of the dynamic displacement field under the coupling conditions of attitude maneuver and flexible vibration with only a small amount of sensing data. The results show that the proposed method can realize high-precision reconstruction of the global displacement field of the solar wing under dynamic excitation.