Abstract:Purpose:In order to reveal the source and influencing factors of water pollution in ionic rare earth mine, a targeted anti-pollution countermeasure is formulated.Method:Analysis of water quality and mineral elements by immersion of mineral mother liquid.Results:The?results show that mother liquid contains many pollutants including exogenous pollutants and mineral pollutants by source. Exogenous pollutants are caused by agents of mineral leaching and the treatment of mother liquid such as ammonium sulfate, magnesium sulfate, sulfuric acid, sodium bicarbonate, extractants, hydrochloric acid, etc.Mineral pollutants are caused by the release of elements from mineral soils in an acidic leaching environment such as lead, zinc, arsenic, thallium, beryllium, uranium, thorium, fluorine, etc. The characteristics of the deposit of rare earth orebody and the mining leaching technology determine the main influencing factors of water pollution in mine including mother liquid leakage,residual mineral leaching agent,mineral content and deposit form of mineral metals,mineral acidic environment and hydrogeological conditions. Measures to control water pollution is proposed by mother fluid leakage interception,residual mineral leaching agent cleaning, acid-base environmental restoration and heavy metal ion mineralization stability, Significance:?Help identify water pollution in ionic rare earth mines and guide mining enterprises to formulate prevention and control measures against water pollution.