The invention discloses a compound feed capable of improving turtle quality. The compound feed comprises the following raw materials in parts by weight: 60-80 parts of corn, 10-20 parts of peanuts, 20-24 parts of
flaxseed meal, 40-45 parts of
high protein materials, 4-10 parts of radishes, 8-16 parts of molasses
powder, 6-12 parts of oil residues, 8-16 parts of Chinese cabbages, 4-8 parts of soya-bean oil, 4-8 parts of a medical stone complex, 1-2 parts of mountain flour, 2-4 parts of
calcium hydrophosphate, 2-4 parts of traditional Chinese herbal
medicine additives, 0.4-0.8 part of premix forturtles, 0.4-0.8 part of a microbial ecological agent, 1-2 parts of an
enzyme preparation and 2-4 parts of an anti-stress agent. The medical stone complex is prepared by the following process steps:mixing and
grinding nano medical stone micro-
powder and
cellulose cotton pulp, adding 1-allyl-3-methyl chloromidazole salt and water for stirring, adding
sodium lignin sulfonate and a polyethyleneimine solution, regulating the pH value of the
system to be 7-7.8, raising the temperature and stirring, performing suction
filtration, washing to be neutral,
drying, and
grinding, thereby obtaining the medical stone complex.