The invention provides a nuclear magnetism and rock electricity experiment process for mixed rock, which comprises the following steps: 1, placing a rock sample of the mixed rock in a closed container, and conducting vacuumizing treatment; then placing the rock sample in a solvent for pressurized cleaning; 2, after cleaning is completed, placing the rock sample in the closed container again, and conducting vacuumizing treatment; 3, preparing a NaCl saturated solution, and placing the rock sample treated in the step 2 in the NaCl saturated solution for impregnation saturation; 4, carrying out nuclear magnetic testing on the rock sample obtained in the step 3; and 5, carrying out rock electricity test on the rock sample obtained after the test in the step 4. According to a full oil salt washing principle, a traditional direct oil salt washing means is abandoned, and the rock sample is vacuumized and then cleaned, so that a cleaning solvent can enter nanoscale intercrystalline pores of the compact rock sample more easily, the rock sample washing degree is ensured as much as possible, the oil salt washing effect is improved, and the experimental measurement precision is effectively improved.