The invention discloses a damage-free sample preparation method for granular material shock wave sensitivity test. The damage-free sample preparation method for granular material shock wave sensitivity test includes the operation steps: (1) processing and manufacturing a sample sleeve meeting the size requirement according to a gap testing standard method; (2) weighing the mass m1 of the hollow sample sleeve; (3) compacting dispersed sample granules to be tested and filling the compacted sample granules into the sample sleeve; (4) weighing the mass m2 of the sample sleeve filled with the sample granules; and (5) placing the filled sample sleeve into a container containing infiltrate for sufficient infiltration. The damage-free sample preparation method cannot crush crystal granules of the sample granules, is simple, eliminates influences of voids among the granules on shock wave sensitivity testing results, truly reflects influences of the sample granule characteristics on shock wave sensitivity and can remarkably distinguish shock wave sensitivity of energetic crystal granule materials different in crystal quality.