The invention aims to provide a test-piece sampling device for ice mechanics testing. The device comprises an elastic drill, a first helix structural body, a second helix structural body and a gasoline engine. The tops of the first helix structural body and the second helix structural body are respectively connected to two ends of a spiral connection body. The bottoms of the first helix structuralbody and the second helix structural body are respectively connected to the elastic drill. The first helix structural body and the second helix structural body are intertwined to form a double helixstructural body. A rotating shaft is fixed above the spiral connection body, and the rotating shaft is connected to the gasoline engine through a rotating shaft connection member. Two sides of the gasoline engine are both provided with a handle. The device is practical and cost-saving. The gasoline engine with a gasoline tank can carry out on-the-spot sampling on the ice surface. The elastic drillcan tighten up and hold the bottom of the icy ocean and then directly extract an ice sample after drilling through the ice surface.