The invention relates to a method for making an adult cat specimen. The method comprises the following steps: completely peeling off the fur of the corpse of a cat; scattering gypsum powder on the inner side and the outer side of the fur which is peeled off to dry the fur; putting the dried fur into a cleanser essence aqueous solution for soaking, after the fur is washed cleanly, taking sodium carbonate solution, applying the sodium carbonate solution to the inner side and the outer side of the fur, maintaining the state for 3 to 6 hours, and applying boric acid antiseptic powder to the inner side of the fur for antiseptic treatment; putting the peeled corpse of the adult cat in plaster paste to obtain a plaster mold; injecting the plaster paste from the sprue gate, and drying in shade to obtain a plaster prosthesis; trimming the plaster prosthesis, wherein the distance between the outer surface of the plaster prosthesis and the inner wall of the plaster mold is 2 to 2.3 centimeters, and injecting mold silica gel in the plaster mold to obtain a hollow silica gel prosthesis; wrapping the hollow silica gel prosthesis with the treated fur to obtain a cat prosthesis; after trimming the cat prosthesis, fixing the cat prosthesis on a xyloid seat board to prepare the specimen of the adult cat. The method is simple, the cost is low, the specimen which is prepared via taxidermy has no pungent odor, the specimen is easy to preserve, and the structure of the specimen is complete and beautiful.