Telescopic rotary storable test tube rack

The utility model discloses a telescopic rotary storable test tube rack, which belongs to the field of medical appliances, and comprises a test tube box, a first test tube rack is fixedly connected to the upper end of the test tube box, a second test tube rack is slidably connected to the middle of the test tube box, and the second test tube rack is positioned below the first test tube rack. The purpose that the test tube boxes with different sample adding holes can be met through the assembled test tube rack can be achieved, the test tube rack is unfolded or stored through the double knobs, and therefore the test tube rack can meet different requirements, convenience is achieved, cost is reduced, and the test tube rack is convenient to use and high in practicability. Meanwhile, corresponding Arabic numerals and English letters are marked on the assembled module test tube rack, so that the sample adding position and codes can be more conveniently seen during sample adding, the phenomenon of sample adding erro