Underground water contaminant movement simulation device on transfluence condition and using method

The invention discloses an underground water contaminant movement simulation device on the transfluence condition and a using method, and belongs to the technical field of underground water contamination simulation instrument equipment. The underground water contaminant movement simulation device comprises a pressure supply unit, a water supply unit, an earth pillar unit and a sample receiving unit. The pressure supply unit comprises a pressure air cylinder, and a pressure reducing valve is arranged at an outlet of the pressure air cylinder. The water supply unit comprises a closed organic glass pillar I capable of bearing pressure. The earth pillar unit comprises an organic glass pillar II capable of bearing pressure. A simulated earth pillar is arranged inside the organic glass pillar II. The top and the bottom of the simulated earth pillar are water-bearing layer settlings, and the middle of the simulated earth pillar is weak water permeable layer settling media. The sample receiving unit comprises a water