NOVELTY - Culture medium comprises broadleaf wooden meal (106-108 pts. wt.), rice bran (88-90 pts. wt.), towel gourd leaf powder (40-42 pts. wt.), sulfur and iron ore residue (20-22 pts. wt.), egg shell powder (20-22 pts. wt.), tomato juice (8-10 pts. wt.), glutinous corn flour (12-14 pts. wt.), brown rice (20-21 pts. wt.), pawpaw seeds (8-9 pts. wt.), broomcorn powder (19-20 pts. wt.), amylase (2-3 pts. wt.), shrimp (17-19 pts. wt.), black bean shell powder (21-22 pts. wt.), black bean (23-24 pts. wt.), trehalose (9-10 pts. wt.), and expanded feather powder (11-12 pts. wt.).    USE - Culture medium used for Pleurotus eryngii (claimed).    ADVANTAGE - The culture medium provides source of nitrogen and carbon and growth environment, and has improved air permeability.    DETAILED DESCRIPTION - Culture medium comprises broadleaf wooden meal (106-108 pts. wt.), rice bran (88-90 pts. wt.), towel gourd leaf powder (40-42 pts. wt.), sulfur and iron ore residue (20-22 pts. wt.), egg shell powder (20-22 pts. wt.), tomato juice (8-10 pts. wt.), glutinous corn flour (12-14 pts. wt.), brown rice (20-21 pts. wt.), pawpaw seeds (8-9 pts. wt.), broomcorn powder (19-20 pts. wt.), amylase (2-3 pts. wt.), shrimp (17-19 pts. wt.), black bean shell powder (21-22 pts. wt.), black bean (23-24 pts. wt.), trehalose (9-10 pts. wt.), expanded feather powder (11-12 pts. wt.), barley powder (13-14 pts. wt.), protease (2-3 pts. wt.), carbon nanotubes (6-7 pts. wt.), pigment of grape skin (3.4-3.6 pts. wt.), zinc-amino acid (3.3-3.5 pts. wt.), and deionized water. An INDEPENDENT CLAIM is included for a method for preparing culture medium, which involves:    (A) mixing black bean shell powder and water at 90-92 degrees C for 30-35 minutes;    (B) filtering obtained product to obtain liquid    (C) homogenizing pigment of grape skin, carbon nanotubes and deionized water at 20000 revolutions/minute for 10-12 minutes;    (D) spray-drying homogenized product;    (E) mixing zinc-amino acid and carbon nanotubes at 20000 revolutions/minute for 28-30 minutes to obtain amino acid product;    (F) spray-drying obtained mixture;    (G) mixing corn flour, brown rice, flour, black bean residue and amylase with water at 27-28 degrees C for 46-50 minutes to obtain starch enzymolysis liquid;    (H) mixing egg shell powder, puffed feather powder, Tenebrio molitor powder, shrimp bran and protease mixture with water at 28-28.4 degrees C for 40-42 minutes to obtain protein enzymolysis liquid;    (I) pulverizing broadleaf wooden meal, bran and towel gourd leaf powder for 10-20 minutes to obtain composite powder;    (J) composting mixture of composite powder, starch enzymolysis liquid and protein enzymolysis liquid for 15-17 days;    (K) drying obtained compost in sun to obtain moisture content of 20-22%;    (L) sterilizing dried product at 90 degrees C for 2-3 hours;    (M) adding amino acid product to obtained product;    (N) mixing tomato juice, pawpaw seed oil and trehalose with water (4-5 times the amount of ingredients) to obtain nutrient liquid;    (O) mixing compost and nutrient liquid;    (P) adjusting water content of obtained mixture to 20-21 degrees C; and    (Q) sterilizing obtained mixture at 90-100 degrees C by steam sterilization for 20-30 minutes.