The invention is a horizontal helicoid single-well pump-pouring heat exchanger, including well pipe with several through holes on the side wall and diving pump, there is a separating device arranged in the well pipe to separate the well pipe into different cavities in which two parallel cavities are provided with the first and second diving pumps, respectively, and the two diving pumps are connected with heat exchanger through the first and second pump pipes respectively, the parts of the two pump pipes situated above the wellhead are provided with the first and second sleeves, respectively, the bottoms of the two sleeves are situated in the place of the underground liquid surface, and the water outlet of the heat exchanger is respectively connected with the two sleeves through pipeline and the first and second valves. A I-steel divides the well into a high pressure cavity and a low pressure cavity to force the underground water to rotate and circulate in the same stratum, thus achieving the stratum where the water can not vertically circulate can still the terrestrial heat energy source to heat and refrigerate.