Pristinamycin IA crystal form and preparation method thereof

The invention discloses a pristinamycin IA crystal form and a preparation method thereof. The crystal form has characteristic peaks at the following 2theta angles in the X-ray powder diffraction spectrum: 7.14 degrees, 7.59 degrees, 8.15 degrees, 14.52 degrees and 21.96+/-0.2 degrees. The crystal form disclosed by the invention is stable, and the preparation method of the crystal form is simple, high in operability and suitable for industrial production.