The invention provides a pharmaceutical composition for preventing and treating red body diseases of shrimps, which is prepared from the following components in parts by weight: 35 parts of cortex moutan radicis, 80 parts of sweet wormwood, 45 parts of
scutellaria baicalensis, 40 parts of
lithospermum, 25 parts of rhizoma anemarrhenae, 50 parts of
gardenia, 70 parts of radix scrophulariae and 30 parts of
radix isatidis. In the invention, pharmaceutical components are fine-selected, reasonable compatibility is realized, and the synergetic effect of respective components is developed; therefore, the pharmaceutical composition has good effects of clearing heat and removing
toxin, and the
immunity of
shrimp bodies can be obviously enhanced; the pharmaceutical composition can play the role of preventing the
reproduction of viruses through inhibiting the synthesis of
nucleic acid and
lipoprotein; after the pharmaceutical composition is administrated, the energy of the shrimps is increased, the number of red bodies is reduced, the orexia of the shrimps is increased, the
immunity of organisms is improved, the death rate of illed shrimps can be quickly reduced, and the economical benefit of a cultivation farmer is sufficiently ensured. Meanwhile, as the pharmaceutical composition is a pure Chinese herbal preparation, the pharmaceutical composition does not have any
side effect, and pharmaceutical residual cannot be formed in
shrimp bodies; therefore, the quality of the
shrimp product can be effectively ensured.