Abstract: After tens dictionaries of Chinese and Chinese-foreign language are looked up, there is not nearly the “bingjiu” Its English is moulin or glacial pothole.term in it, it is reflected that the term is still not approved by most geonomist, to substitute “bingchuan huxue”① for “bingjiu” continually is proposed.Owing to waterpower condition and geomorphologic shape growing moulin and pothole are similar, so from form only distinguishing the pothole or moulin on the riverbed are difficult, only if fixing there is glacier in Guangdong, the moulin can just be fixed in Guangdong.It is confirmed that environment of Quaternary glacier in Guangdong appeared not from following angles of climate, landform and organisms etc.:Inferred annual mean temperature was higher than 6℃ in glacial epoch at the highest peak-Shikengkong its elevation was 1902m in Guangdong, the coldest annual mean temperature was 13℃ ± in the glacial epoch inferred by sporopollen data in Jiexi and Fengshun; there is not the glacial landform in the middle-low mountains of Guangdong and there is not the document report on established palaeo glacier remains; the plant fossil in Early Pleistocene Zhanjiang Fm.is Bauhinia-Diospyros-Myrica-phyllites-Rhus combination, today there are still a large number relict flora.The following moulin theory on mechanism for the formation and conservation of moulin is untenable:(1) moulin grows where water stress concentrates at a point; (2) pothole can not grows on the river bed of granite and sandstone bedrock; (3) moulin grew before (200-300)×10⁴a and can be conserved so far.