The invention discloses a soil shearing strength and water and soil pressure measurement simulation device and method. The device comprises a power pressure supply unit and a measurement unit; the power pressure supply unit is connected with the measurement unit to provide a pressure for the measurement unit, and the power pressure supply unit is provided with a hydraulic pressure gauge for measuring a hydraulic pressure; the measurement unit comprises a container and a shearing strength measurement mechanism; a sliding sleeve sealing mechanism is arranged in the container to divide the interior of the container into two parts; the space in the container comprises a first space and a second space, the power pressure supply unit communicates with the second space, the shearing strength measurement mechanism is installed on the container and stretches into the first space, and a water filtering member and a water passing hole are arranged on a side wall of the first space; and the shearing strength measurement mechanism comprises a shearing plate and a plate rod, a plurality of shearing pieces are arranged on the plate rod, and the plate rod is fixed with the container, and the jointis sealed. By adopting the soil shearing strength and water and soil pressure measurement simulation device and device disclosed by the invention a water pressure and a soil pressure in remolded soilcan be measured; and the measured shearing strength does not undergo a soil sample release process, so that the measurement result is more accurate, and the promotion prospect is broad.