///Taking the Wentangxia hot springs in Chongqing and hot springs at Xiaojiang fault zone in East Yunnan as the research object, the hydrogeochemic features are studied in the paper. It is found that the hydrogeochemic features of the hot springs outcrop from Wentangxia anticline are similar because of the same geologic backgrounds, and their hydrochemistry types are SO4-Ca(Mg); but that the hydrochemic features of the thermal water outcrop from Xiaojiang fault zone are quiet different for their difference of geologic conditions, their hydrochemistry types are HCO3-Na(YN1), HCO3-Ca(YN2), SO4-Ca(YN3 and YN5)and SO4-HCO3-Ca-Na (YN4).