Underground water level measuring probe and underground water level measuring device

The utility model relates to the technical field of water level detection, in particular to an underground water level measuring probe and an underground water level measuring device which comprise a fixing block, a water level probe is installed on one side of the bottom of the fixing block, and a cavity is formed in the fixing block and located on one side of the water level probe. A sampling assembly is arranged in the cavity and comprises a sampling pipe communicated with the bottom of the cavity, the extraction end of the sampling pipe penetrates out of the fixing block and extends to the outer side, a driving motor is installed at the top of the cavity, the output end of the driving motor is connected with a lead screw, a piston is arranged in the sampling pipe, and the piston is connected with a sleeve rod. A winder is arranged in the box body, a waterproof rubber pipe is wound on the winder, a partition plate is arranged below the winder, and when the probe makes contact with underground water for wat