The invention relates to the technical field of medicine crystals, in particular to a sodium fusidate novel crystal form and a preparation method and application thereof. In an X-ray powder diffraction spectrogram of the novel crystal form, the sodium fusidate novel crystal form has characteristic peaks at the positions of 9.646 degrees, 10.882 degrees, 11.034 degrees, 13.840 degrees, 14.046 degrees, 16.577 degrees, 17.318 degrees, 17.687 degrees, 18.072 degrees, 19.868 degrees, 23.036 degrees, 25.489 degrees and 27.400 degrees as shown in 2 theta+/-0.2 degrees. The novel sodium fusidate crystal form prepared by the invention has the advantages of good fluidity, convenience in subpackage and preservation and the like, can be used for preparing a sodium fusidate injection, and is favorable for improving the medicine quality and the like.