The invention discloses an adjustable airing rack, comprising a supporting rod and telescopic rods. A vertical direction of the supporting rod is provided with a hole. The supporting rod is rotatablyconnected with a circular shaft. The circular shaft is provided with a gear. The left end and the right end of the gear are respectively meshed with a first rack and a second rack. The supporting rodis provided with a stop mechanism used to stop the circular shaft. The top of the telescopic rod is provided with an adjusting rod. The adjusting rod comprises an outer rod, a middle rod slidably connected with the outer rod, and an inner rod slidably connected with the middle rod from outside to inside in sequence. The middle rod is detachably connected with the inner rod. The middle rod is provided with a plurality of limiting holes at equal interval. Each limiting hole is slidably connected with a first inclined block, and a first spring is arranged between the inclined block and an inner wall of the middle rod. The top of the first inclined block is in an arc shape or a triangular shape. The first inclined block is provided with a round hole. The inner rod is provided with a second inclined block used to extrude the first inclined block. A steel wire abutted against the second rack is arranged between the inner rod and the first rack. The scheme mainly solves problems that airing efficiency of an existing airing rack is low and height cannot be adjustable.