An ice sampling bit and an ice sampling method implemented by using the same relate to the field of ice sampling bits. The invention is intended to solve the problems that an existing ice sampling mode is complex, damage is caused to the shape of an ice sample and completeness of the ice sample cannot be guarantied. A cylindrical wall of the invention is of cylindrical structure with a top opening, one end of a standard internal-thread connection is used for being connected with a bottom end surface of the cylindrical wall, the other end of the standard internal-thread connection is in threaded connection with a drill rig, the open end surface of the top end of the cylindrical wall is evenly provided with a plurality of external grooved teeth, a plurality of internal grooved teeth and a plurality of bottom teeth, the external grooved teeth are toothed edges extending out along the cylindrical wall and are used to grind ice outside the cylindrical wall, the internal grooved teeth are toothed edges extending out along the cylindrical wall and are used for grinding ice inside the cylinder wall. The bottom teeth are arranged on the top end surface of the cylindrical wall. The ice sampling bit is used for drilling to acquire ice samples.