Test tube rack for complete transfer of liquid

The invention relates to a test tube rack for complete transfer of liquid. The test tube rack is characterized by comprising an upper plate of the test tube rack, a connecting column of the test tube rack, a guide plate of the test tube rack, an elastic buffer cushion and a bottom plate of the test tube rack, wherein the upper plate of the test tube rack, the guide plate of the test tube rack, the elastic buffer cushion and the bottom plate of the test tube rack are sequentially connected with the connecting column of the test tube rack from top to bottom; the upper plate of the test tube rack and the guide plate of the test tube rack are arranged in a spacing way; the guide plate of the test tube rack, the elastic buffer cushion and the bottom plate of the test tube rack are sequentially abutted and connected; a plurality of through holes are correspondingly formed in the upper plate of the test tube rack and the guide plate of the test tube rack; the through holes in the upper plate of the test tube rack and the guide plate of the test tube rack are matched with the elastic buffer cushion to form a containing space for holding a sample test tube; the elastic buffer cushion can form the bottom part of the containing space. The test tube rack has the advantages that the puncturing of the test tube by a delivered needle is effectively prevented, the complete transfer of sample liquid in the test tube is realized, and the defects of low accuracy of an analysis result and waste of the sample are overcome.