The wet-type cryogenic probe is a high-performance refrigeration device specifically developed for cryogenic scientific experiments and research in material physics. Utilizing liquid helium as the refrigerant and achieving efficient heat transfer to the sample area via a dynamic helium exchange method, the system enables precise temperature control across a broad range from 1.5 K to 300 K without the need for complex refrigerators. The temperature range can be extended up to 420 K based on user requirements.​