The invention relates to an extractor of ultra-high molecular weight polyethylene jelly glue thread, which is composed of several extraction boxes as independent working units. Each extraction box is capable of independent controlling the extraction concentration of extract liquid to execute multi-stage extraction to the jelly glue thread; each extraction box is spaced into a plurality of extraction slots by spacing plates with different heights; each extraction box has independent liquid inlet and exhausting mechanism, the liquid inlet mechanism is provided at the bottom of the extraction slot at the thread outlet terminal of the extraction box, using a flow quantity fixed to pump in the extracting solvent, and the extracting solvent enters in the extraction slot at the thread inlet terminal through the spacing plate; and the liquid exhausting mechanism is provided at the bottom of the extraction slot at the thread inlet terminal of the extraction box, so as to discharge waste liquidquantitatively in an intermittent manner. The design manner can reduce fabricating cost, reduce accommodation area, improve extraction efficiency, and accurately control the oil content after the jelly glue thread extraction.