Soil solution sampling device

The utility model relates to a soil solution sampling device. The soil solution sampling device comprises a hole puncher and is provided with two or more sampling containers which are arranged sequentially, wherein glass tubes are fixed in the sampling containers and are connected with extraction tubes which are arranged outside the sampling containers, the extraction tubes are connected with sampling heads in a penetrating manner, and the lengths of the extraction tubes connected with all the sampling containers are increased or decreased gradually; the sampling containers and a vacuum connecting tube are in penetrating connection, and the vacuum connecting tube is connected with a vacuum pump. The soil solution sampling device can be applied to the real-time continuous sampling of a laboratory or field soil solution, can be applied to one-machine multipoint sampling and different-depth different-location simultaneous sampling and can also achieve a regular sampling function; a solution in target soil can be conveniently, accurately and quickly extracted in a targeted manner, so that the soil solution sampling device can be applied to the investigating, treating, monitoring and other processes of contaminated soil and can also be applied to the sampling detection of the soil solution during plant cultivation.