The invention discloses an intelligent flexible wing of terminal sensing ammunition. The intelligent flexible wing comprises a truss mechanism, a drive mechanism, a self-locking mechanism and a skin. The truss mechanism is of a telescopic structure formed by a plurality of truss rods. The drive mechanism comprises a deformation memory alloy spring, a guide rail and a guide block. The deformation memory alloy spring provides drive force so that the guide block can be driven to move in the guide rail. The guide block moves to drive the truss rods to rotate, and then the skin is unfolded through rotation of the truss rods. By means of the intelligent flexible wing, the area of the wing is greatly changed, the requirements of a small space can be met when the wing is unfolded, and the requirement for efficient speed reduction can be met after the wing is unfolded.