Portable grain sampler

The utility model relates to the technical field of grain storage, and discloses a portable grain sampler which comprises a fixing rod, a handle groove is formed in the outer wall of the fixing rod, a discharging port is formed in the end, close to the handle groove, of the fixing rod, and the inner wall of the fixing rod is slidably connected with one end of a stretching rod. The other end of the stretching rod is rotationally connected with a rotating column, the inner wall of the rotating column is slidably connected with a breaking tip, a feeding port is formed in the outer wall of the stretching rod, a sliding groove and a rotating groove are formed in the inner wall of the fixing rod, and a spherical groove is formed in the bottom of the rotating groove. Through a long strip block on the outer wall of the breaking tip and a long strip groove in the inner wall of the rotating column, the breaking tip rotates along with the rotating column when the rotating column rotates, the breaking tip is driven to ro