The utility model provides an improve wing of unexpected stalling characteristics of band saw tooth swept wing transonic, includes inboard leading edge flap, outside leading edge flap, outer wing, aileron and inner wing, and the outside and the outer wing fixed connection of inner wing, outside leading edge flap connect at outer nose of wing, and nose of wing including inboard leading edge flap connects, the trailing edge of outer wing are connected with the aileron, inboard leading edge flap and outside leading edge flap between be the transition of chamfered formula blunt sawtooth, this blunt sawtooth transition and the outside leading edge flap sync deflection that links together, inboard leading edge flap with blunt sawtooth transition between have a slit, the leading edge of blunt sawtooth transition becomes an acute angle with the incoming flow direction in wing planform, through forming the transition of chamfered formula blunt sawtooth, can weaken or eliminate the vortex that the sawtooth is deviate from at upper wing face, near the strength of vortex in sawtooth reduces, upper wing face's flow is more stable, boundary layer adverse pressure gradient is more relaxed, separation point more after by, improves warpout pterygoid process so stalling characteristics.