Centrifuge tube placing shelf capable of preventing centrifuge tubes from deflecting

The invention discloses a centrifuge tube placing shelf capable of preventing centrifuge tubes from deflecting. The shelf includes a top plate, a bottom plate, a plurality of clamping components, and fixing columns, wherein a plurality of through holes and sliding grooves corresponding to the through holes in a one-to-one correspondence manner are formed in the top plate; the number of the clamping components is consistent with that of the through holes; each clamping component includes two clamping blocks of the same structure and arranged symmetrically; each clamping block includes a body, a sliding block and a connecting block for connecting the body with the sliding block; the body is arranged adjacently on the top plate and provided with an arc-shaped clamping surface; two corresponding arc-shaped clamping surfaces embrace to form an adjustable clamping space; the arc-shaped clamping surface of each body extends in the axial direction of the through hole to form a guide section; the guide sections penetrate through the through holes; the sliding blocks are accommodated in the sliding grooves, and can slide relatively to the sliding grooves. The centrifuge tube placing shelf provided by the invention is applicable to centrifuge tubes with various specifications and sizes, and the moving direction during the insertion of the centrifuge tubes is ensured, so that the centrifuge tubes are prevented from deflecting.