Telescopic spiral combination type immunoaffinity column

The invention discloses a telescopic spiral combination type immunoaffinity column. The telescopic spiral combination type immunoaffinity column comprises an upper plug, a lower plug and a sample loading tube. The circumference of the upper plug is provided with an outside thread, and the upper plug cooperates with the inlet of the sample loading tube in a threaded manner; the circumference of the lower plug is provided with inside thread, and the lower plug cooperates with the outlet of the sample loading tube in a threaded manner; the sample loading tube comprises the inlet, a column cavity and the outlet, and the circumference of the inlet is provided with an inside threaded used for combining fixation of the upper plug or combining fixation of the outlet of an another immunoaffinity column; and the circumference of the outlet is provided with an outside thread used for combining fixation of the lower plug or combining fixation of the inlet of the another immunoaffinity column. The telescopic spiral combination type immunoaffinity column improves the volume of an active solution, has enhanced integral sealing property, guarantees sufficient antibody active solution and prevents overflow and solution leakage.