Test tube placing rack for clinical laboratory

The test tube placing rack for the clinical laboratory comprises a bottom plate, multiple sets of supporting rods are fixedly arranged on the periphery of the top end of the bottom plate, the upper ends of rod bodies of the multiple sets of supporting rods are fixedly sleeved with first sleeves, the top ends of the interiors of the first sleeves are fixedly connected with springs, and the rod bodies of the multiple sets of supporting rods are fixedly sleeved with fixing plates; a placing box is fixedly connected between the multiple sets of first sleeves, two sets of placing grooves are formed in the upper ends of the two side walls of the interior of the placing box, two sets of screws are rotationally connected to the bottom ends of the interiors of the two sets of placing grooves, and second sleeves are rotationally arranged on rod bodies of the two sets of screws; the opposite side walls of the two groups of second sleeves are fixedly connected with a first test tube plate, and a plurality of groups of fi