In order to investigate the influence of groundwater input from submersible aquifers on the temporal and spatial distribution of water characteristics of Hulun Lake, water samples were collected from the alluvial plain area on the east side of the lake, the low hilly area on the west side and the lake area in January 2022 (ice seal period) and July 2022 (non-ice seal period) respectively. Based on water chemical characteristics (pH, TDS, Na+, K+, Ca2+, Mg2+, Cl?, SO42?, NO3?) and stable isotope characteristics (δD, δ18O, d-excess), the spatial and temporal differences of lake water characteristics in the east and west Hulun Lakes during the ice and non-ice periods were analyzed. The results show that there are obvious differences in the characteristics of phreaticsubmersible water bodies between the east alluvial plain area and the west low hilly area, and the difference is more significant under the condition of when there is no permafrost cover in summer. For example, In winter, the variation range of δD and δ18O between phreatic water in winterdives is only 34% and 22% of that in summer, and the mean difference of δD and δ18O is only 2.78 ‰ and 3.23 ‰. At the same timeMeanwhile, the total amount of phreatic waterdive supply lakes is small during this period, and the lake water does not show nearshore phreatic waterdiving characteristics. The phreatic stable isotopes of phreatic water (δD: -105.70 ‰, δ18O: -17.10 ‰) in the alluvial plain area in summer isare more higherbarren than those in the hilly area (δD: -97.50 ‰, δ18O: -15.08 ‰) and. tThe TDS content (2472 mg/L) is 3.6 times that of phreatic waterthe diving in the low hilly area (678 mg/L). Correspondingly, the lake water near the east and west banks of Hulun Lake is similar to phreatic waterthe diving in the nearshore zone. The isotope of the lake water in the east coast (δD: -68.97 ‰, δ18O: -8.77 ‰) is poorer than that in the west coast (δD: -68.33 ‰, δ18O: -8.50 ‰)., The results show that the response of lake water to phreatic water in alluvial plain area is higher than that in hilly area under the influence of different topography and geomorphology of different water supply sources, and the response of lake water to phreatic waterr in summer is higher than that in winter.and the response of the lake water to the alluvial plain area is higher than that in the low hill area. The study on the influence of different types of groundwater on the lake water during the process of large amounts of groundwater recharge is conducive to a comprehensive analysis of the hydrological cycle of lake basins in cold and arid regions.