In order to understand the dispersion characteristics of pollutants in the Cambrian dolomite,this study takes a site in Northeast Guizhou as the research area.Through the characterization of small-scale models in the experimental field,on-site dispersion experiments are conducted to analyze dispersion curves and solve dispersion parameters.The study summarizes the dispersion characteristics of dolomite in mountainous basin are-as.The research findings can serve as a reference for engineering construction and groundwater pollution control in areas with similar hydrogeological conditions.Additionally,they provide a demonstration for conducting field dispersion experiments in mountainous basin regions.