The invention discloses a rubber air drying support with an improved structure. The support comprises a rectangular lower frame and an upper frame, a plurality of stand columns are fixed at the two ends of the lower frame, the upper ends of the stand columns are fixed to the upper frame, wheels are fixedly connected to the four corners of the lower frame, a plurality of right angled inverted n-shaped lower groove rails are fixed on the lower frame, right angled n-shaped upper groove rails which are opposite to the lower groove rails are fixed on the upper frame, guide grooves are formed in twoside plates of each lower groove rail, front rolling wheels are inserted into the positions, at the front ends of the guide grooves, of the lower groove rails, the front rolling wheels are hinged tofront supporting shafts, the two ends of the front supporting shafts are inserted and fixed in the two side walls of the lower groove rails, air drying frames are arranged between the upper groove rails and the lower groove rails, each air drying frame comprises a right angled n-shaped lower support, the lower supports are inserted into the lower groove rails in a sleeving mode, rear rolling wheels are inserted into the rear ends of the lower groove rails, the rear rolling wheels are hinged to rear supporting shafts, and the two ends of the supporting shaft penetrate through the guide groovesof the lower groove rails to be inserted and fixed on the lower supports. The rubber air drying support can be moved, and to-be-aired rubber can be placed on the arranged air drying supports conveniently.