Leaching experiment device

The invention relates to a leaching experiment device. The leaching experiment device comprises a shell and a material chamber with an upward opening, the shell is internally and sequentially providedwith a bottom leaching medium layer, the material chamber and a top leaching medium layer from bottom to top, the material chamber is constituted by an outer chamber and a built-in chamber located inthe outer chamber and used for storing a leached substance, liquid-permeable holes are formed in the side wall of the built-in chamber, and a leaching liquid through hole is formed in the center of the bottom of the outer chamber. According to the leaching experiment device, the laying flatness of the leached substance is ensured by forming the material chamber in the shell, and thus a leaching solvent can make uniform contact with the leached substance; and in addition, the material chamber is divided into the outer chamber and the built-in chamber, the built-in chamber has a certain liquidstorage function, a soil wa