Abstract: The phreatic line is the lifeline of the wet-discharge tailings pond, and its depth directly affects the stability of the embankmen. In recent years, some scholars have carried out extensive research on the phreatic line of tailings pond. The author has taken a tailings pond as an example and used Geo-studio software to simulate and analyze the seepage of the tailings pond under normal working conditions and flood working conditions. The analysis results can provide reference for the setting of the drainage system of the tailings pond and provide guidance for Safe operation management of the tailings pond.