Device for measuring swelling and shrinking property of soil sample under dry-wet and freeze-thaw cycle coupling action

The utility model discloses a device for measuring swelling-shrinking property of soil sample under dry-wet and freeze-thaw cycle coupling action, which comprises a test component and a detection component, the test component comprises a sample ring, an upper permeable stone and a lower permeable stone, the sample ring is used for placing the soil sample to be detected, the upper permeable stone is arranged above the test ring, and the lower permeable stone is arranged below the test ring. A lower permeable stone is arranged below the test ring; the device further comprises at least one group of semiconductor temperature control components, each semiconductor temperature control component comprises at least one N-type semiconductor, at least one P-type semiconductor, first electrodes and second electrodes, the N-type semiconductors and the P-type semiconductors are connected in series through the first electrodes and the second electrodes, the first electrodes and the second electrodes are alternately arrange