An adjustable nose pad structure comprises a main body and two adjustable members. The main body includes two adjustable portions having portions defining an open slot and a groove. The open slot has two opposite sidewalls, and a plurality of first recesses and second recesses. Each adjustable member is disposed in each adjustable portion. Each adjustable portion includes a pivotable portion and a connecting body. The connecting body has two opposite sidewalls respectively having a first convex protrusion and a second convex protrusion. One first convex protrusion is removably engaged to one of the first recesses, and one second convex protrusion is removably engaged to one of the second recesses. Thus, users can adjust the nose pads via adjusting the adjustable member until the nose pads are in position to properly fit the shape of user's nose.