The invention discloses a solar wing device. The solar wind device is used for being mounted on a satellite and comprises a wing plate and a drawing mechanism capable of enabling the wing plate to be kept in the contraction state. The wing plate comprises a plurality of battery plates connected in sequence, and plate springs arranged between every two adjacent battery plates, and thus the battery plates can bend relatively to form the contraction state of the wing plate. According to the solar wing device, the battery plates are connected through the plate springs, the mounting space is reduced, the occupied space of the wing plate in the contraction state is small, and the wing plate can automatically unfold without action of external force.