Soil sample collecting device

The utility model discloses a soil sample collecting device, which belongs to the field of soil sample collecting devices, and comprises a bottom plate, the upper end of the bottom plate is rotatably connected with a fixing ring, in the soil collecting process, the bottom plate can be firstly placed on an area where soil needs to be collected, then a cross rod is pressed, and the soil can be collected. The connecting rod is driven to drive the lantern ring to abut against the extension spring, the extension spring is forced to be compressed, so that the storage assembly is inserted into the soil, the test soil needing to be collected is stored in the storage assembly, and when the sampled test soil needs to be taken out subsequently, the storage assembly automatically rebounds due to the elastic potential energy reset characteristic of the extension spring. Therefore, the storage assembly after sampling is carried back to the ground, so that the storage assembly can be conveniently taken out by personnel, an