Carbonate fracture-cavity rock core engraving device and using method thereof

The invention discloses a carbonatite fracture-cavity rock core engraving device and a using method thereof, the carbonatite fracture-cavity rock core engraving device comprises a rock core, an engraving mold and a fluid pump, and the liquid outlet end of the fluid pump is communicated with a liquid outlet rubber head. The rock core, the engraving mold and the fluid pump are arranged, the fluid pump sprays a hydrochloric acid solution to the surface of the rock core, then the rock core can be subjected to corrosion engraving, the engraving mold can plan an engraving shape on the surface of the rock core so that accurate engraving can be achieved, and the lifting assembly is arranged to support the engraving mold; according to the rock core engraving device, the engraving mold can be integrally rotated and horizontally displaced to realize corrosion engraving of different parts of a rock core, and a sliding stop block is further arranged to shield different numbers of solution absorption ports so as to determi