A composite glasses structure, wherein comprising a lens assembly, two earpieces, a rim assembly and a nose pad assembly, wherein, the lens assembly comprises two lenses and a cross beam for connecting the two lenses; two earpieces are respectively detachably connected with the lens assembly; the rim assembly comprises an upper rim and a lower rim which are respectively detachably connected with the upper and lower edges of the lens assembly; and the nose pad assembly is arranged on the inner side of the cross beam and is detachably connected with the cross beam, and also limits and fixes the upper edge, lower edge, and upper and/or lower rims of the two lenses; the two earpieces are respectively connected to the lens assembly, the nose pad assembly is connected to the inner side of the cross beam in the lens assembly, so the two earpieces, lens assembly and nose pad assembly are combined to form the first state of glasses structure; the two earpieces are respectively connected to the lens assembly, the upper rim in the rim assembly is arranged on the upper edge of the two lenses in the lens assembly, the nose pad assembly is connected to the inner side of the cross beam in the lens assembly, and it limits and fix the upper rim arranged on the upper edge of the two lenses, so the two earpieces, lens assembly, nose pad assembly and upper rim of the rim assembly are combined to form the second state of glasses structure; the two earpieces are respectively connected to the lens assembly; the lower rim in the rim assembly is arranged on the lower edge of the two lenses in the lens assembly, the nose pad assembly is connected to the inner side of the cross beam in the lens assembly, and it limits and fix the lower rim arranged on the lower edge of the two lenses, so the two earpieces, lens assembly, nose pad assembly and lower rim of the rim assembly are combined to form the third state of glasses structure; the two earpieces are respectively connected to the lens assembly, the upper and lower rims in the rim assembly are respectively arranged on the upper and lower edges of the two lenses in the lens assembly, the nose pad assembly is connected to the inner side of the cross beam in the lens assembly, and it limits and fixes the upper and lower rims arranged on the upper and lower edges of the two lenses, so the two earpieces, lens assembly, nose pad assembly and upper and lower rims of the rim assembly are combined to form the fourth state of glasses structure, wherein the inner side of the cross beam in the lens assembly is provided with a mounting part, the nose pad assembly comprises a rotating assembly which is detachably connected with the mounting part; the rotating assembly is configured to turn relative to the mounting part, and is provided with a first limiting part; the upper rim in the rim assembly is provided with a first fitting part which matches with the first limiting part; when the rotating assembly in the nose pad assembly is rotated to the first position which is configured to fit with the human nose, the first limiting part of the rotating assembly is configured to be rotated to the position which abut and match with the first fitting part of the upper rim to limit and fix the upper rim; when the rotating assembly in the nose pad assembly is rotated from the first position to the second position along the direction away from the cross beam, the first limiting part of the rotating assembly is configured to be separated from the first fitting part of the upper rim to free the upper rim, wherein the rotating assembly comprises nose pads, rotating shafts and connecting pieces for connecting nose pads and rotating shafts, the nose pads are fixed on the connecting pieces, the connecting pieces are connected with the rotating shafts and is configured to drive the rotating shafts to turn, the rotating shafts are detachably positioned on the mounting part on the inner side of the cross beam; a first limiting block is arranged on the rotating shaft as a first limiting part of the rotating assembly, and a first limiting groove is arranged on the upper rim in the rim assembly as a first fitting part of the upper rim, when the rotating assembly is rotated to the first position, the first limiting block is counterbalanced by the first limiting groove to limit and fix the upper rim, and when the rotating assembly is rotated to the second position, the first limiting block is separated from the first limiting groove to free the upper rim, wherein the first limiting block is provided with an abdicating groove surface and a convex part, the former is formed through the inward concaving of the rotating shaft, and the latter is formed through the extension of the first limiting block to the outer side of the abdicating groove surface, the lower end of the first limiting groove on the upper rim is provided with a limiting hook which extend at a certain distance to the inner side of the upper rim; when the rotating assembly is rotated to the first position, the limiting hook abuts against the convex part of the first limiting block, and when the rotating assembly is rotated to the second position, the abdicating groove surface is configured to be rotated to the side close to the limiting hook, and interference is not generated on the limiting hook when the upper rim is removed.