The utility model belongs to the field of soil environment detection, and particularly relates to a sampling device for environment detection, which comprises a bottom plate, supporting columns are fixedly mounted on the upper surfaces of the two sides of the bottom plate, mounting grooves are formed in the surfaces of the opposite sides of the two groups of supporting columns, and the two ends of a lower pressing rod are slidably connected in the two groups of mounting grooves respectively. A sampling rod is fixedly connected to the middle of the lower surface of the downward pressing rod, a sampling hole is formed in the surface of the lower end of the sampling rod, the downward pressing rod can be driven to slide downwards in the two sets of mounting grooves during sampling, and due to the fact that the sampling rod is fixedly connected with the downward pressing rod, the downward pressing rod can be pressed downwards to penetrate through the through hole to penetrate into soil; due to the fact that the sampling hole is formed in the surface of the lower end of the downward pressing rod, after the sampling rod is downwards pressed into soil, the soil can enter the sampling hole, the sampling purpose is achieved, the bottom plate can tightly press the ground surface when the sampling rod ascends, the surface soil can be prevented from being lifted along with the sampling rod, the environment cannot be damaged, and time and labor are saved.