Rock-soil sample packaging sample bag

The embodiment of the utility model provides a rock and soil sample packaging sample bag, and belongs to the technical field of engineering investigation. The rock-soil sample packaging bag is used for sealing a rock-soil sample, the rock-soil sample packaging bag comprises an upper sample bag and a lower sample bag, the upper sample bag is made of a flexible material, and a first opening is formed in the bottom of the upper sample bag; the lower sample bag is made of a flexible material, a second opening is formed in the top of the lower sample bag, the inner diameter of the second opening is matched with the outer diameter of the first opening, and the lower sample bag is connected to the peripheral side of the upper sample bag in a sleeving manner through the second opening and at least partially covers the upper sample bag in an overlapping manner, so that a containing cavity for placing a rock-soil sample is formed between the upper sample bag and the lower sample bag; wherein the top of the lower sample