Disposable human body vein blood sample collection container

The utility model relates to a disposable human body vein blood sample collection container which comprises a test tube A and a test tube B. The test tube A is installed on the test tube B through threads, a first locking assembly is installed on the top of the test tube A, a drainage groove is formed in the bottom of the test tube A, and a liquid blocking assembly is installed on the top of the drainage groove. According to the disposable human body vein blood sample collection container, when the blood collection dosage is large and the capacity of a single blood collection tube is insufficient, the two tube bodies can be spliced for use, the material blocking assembly is installed between the test tube A and the test tube B, and the test tube A and the test tube B can be communicated by rotating the two-way threaded rod; the operation is simple and convenient, the risk of needle infection caused by contact between the blood sampling needle and external air is avoided, a single test tube can be used when th