Improved test tube for nasopharyngeal swab of collection opening

The improved test tube comprises a tube body, one end of the tube body is provided with a tube opening, the other end of the tube body is provided with a closed end, the tube opening of the tube body is integrally provided with an annular reinforcing seat, a clamping opening is reserved in the side wall of the annular reinforcing seat, and the clamping opening is provided with a clamping groove. The clamping opening penetrates through the end wall of the end, back on to the pipe body, of the annular reinforcing base, the clamping opening is a V-shaped clamping opening, the edge of the inner side of the clamping opening is provided with a corner angle, the edge of the outer side of the clamping opening is of a fillet structure, and the outer portion of the annular reinforcing base is in threaded connection with a protective cover. The nasopharynx swab has the advantages that the breakage rate of the nasopharynx swab is increased, a specimen can fall into a test tube more easily, the possibility that the specim