Multifunctional sample producing device for testing suction force of unsaturated soil

The utility model discloses a multifunctional sample producing device for testing the suction force of unsaturated soil. The multifunctional sample producing device comprises a base, a bottom hole gasket, a sleeve used for accommodating a soil sample, a hollow compaction hammer, and a vertical iron pole used for reserving a position for the ceramic cup of a tensiometer, wherein the sleeve is cylindrical; the vertical iron pole is arranged in the centers of the sleeve and the base; the sleeve is fixedly clamped on the base. The sample producing device is simple in structure, and reasonable in design, and has the advantages that the position for the ceramic cup of the tensiometer is reserved through the vertical iron pole, and the bottom hole gasket used for placing of filter paper is additionally arranged on the base after sample production, so that the measurement of the suction force of the unsaturated soil can be performed according to both a filter paper method and a tensiometer method simultaneously with one sample producing device; the use is convenient; the cost is low; soil sample waste is avoided; errors caused by production of different soil samples can be reduced.