A pneumatic integrated foldable wing mechanism for a foldable flapping-wing micro air vehicle belongs to the technical field of air vehicles. The pneumatic integrated foldable wing mechanism for the foldable flapping-wing micro air vehicle comprises three folding wings, a pneumatic tube, a magnet I, an electromagnet, a magnet II, an upper wing membrane and a lower wing membrane, wherein the two sides of the middle folding wing are connected with the left folding wing and the right folding wing through elastic elements; the magnet I is fixedly connected with the left folding ring; the electromagnet is fixedly connected with the middle folding wing; the magnet II is fixedly connected with the right folding wing; when the three folding wings are in a folded state, the centers of the magnet I,the electromagnet and the magnet II are on one vertical line from bottom to top; the pneumatic tube is fixedly connected under the three folding wings; the upper wing membrane is coated on the uppersurfaces of the three folding wings; and the lower wing membrane is coated under the pneumatic tube. According to the pneumatic integrated foldable wing mechanism for the foldable flapping-wing microair vehicle, each part can accurately respond under the control of a single chip to effectively finish wing folding and unfolding actions; when the wings of the foldable flapping-wing micro air vehicle are folded, the pneumatic integrated foldable wing mechanism for the foldable flapping-wing micro air vehicle is kept in a folded state by using the magnets; therefore, the working efficiency is high and the pneumatic integrated foldable wing mechanism for the foldable flapping-wing micro air vehicle is convenient to recycle and carry.