Three-in-one test tube

The utility model provides a three-code-in-one test tube, which solves the problem that a conventional test tube is inconvenient for traceability management of reagents stored in the test tube and the like, and comprises a test tube main body, a sealing plug is arranged at an opening at the upper end of the test tube main body, and a sealing cylinder attached to the inner side of the test tube main body is arranged at the lower end of the sealing plug. A plurality of annular sealing rings are distributed on the inner side and the outer side of the sealing cylinder from top to bottom, a locking mechanism is arranged between the inner side of the sealing plug and the outer side of the test tube body, a bar code and digital code recognition area is arranged on the side face of the test tube body in a printing mode, and a two-dimensional code recognition area is arranged at the bottom of the test tube body in a printing mode. The device has the advantages of convenience in management, good sealing performance and