An improved structure for nose pieces of spectacles, comprises two nose pieces made of soft plastic in concaved shapes and having their front faces planted with fine down and provided with a plurality of air permeable holes, a connecting axle integrally protruding from the nose piece with a protruding ball extending into a base and being able of automatic orientation adjustment and being pressed in the base by a pressing detent which in turn being pressed by a torsional spring, the structure each can be clamped onto a seat (on the spectacles) for a nose piece so as not to be subjected to falling off and is convenient for assembling, the nose piece with this structure can best fit to the bridge of a nose.