Reducing the adhesion between the cast polymer bonded explosive (PBX) slurry and the contact material is one of the key factors to improve the preparation technology level and efficiency of the casting solidified PBX. Constructing micro-nano hierarchical composite bioinspired structure on the metal surface of contact container by solution etching method makes the static contact angles of high-viscosity HTPB and casting PBX slurries be all higher than 130°. The surface has well anti-wetting properties and forming the bioinspired flower micro-nano composite structures on the metal surface by adjusting the etching time for 120 minutes can make the adhesion force between the metal surface and HTPB、HTPB/Al and HTPB/Fox-7 slurry decrease to 29.4, 46.0 μN and 12.7 μN， respectively, with a decrease range of 57%~82%. At the same time, the bioinspired structure is coated on the inner surface of the die, and the non-adherence property of PBX slurry is realized macroscopically.