The invention belongs to the technical field of biological medicines, and particularly relates to bacillus marinus and application thereof. The bacillus marinus is a
polysaccharide producing marine bacterium
Bacillus sp. BS11; a strain is applied to the preparation of an anti-
cancer drug, an anti-tumor
metastasis drug, an anti-
cancer health product or an anti-
cancer recurrence health product; thebacillus marinus provided by the invention is separated from the seamount and can be used for preparing the anti-cancer
drug or the anti-cancer health product or preparing the anti-tumor
metastasis drug or an anti-
tumor formation health product. The invention discloses application of an
extracellular polysaccharide of a bacillus to the preparation of anti-cancer and anti-tumor
metastasis drugs andhealth products, and the bacillus marinus can be used for inhibiting the expression, in a
cell A549, of betaIII-
tubulin, is used for inhibiting the formation of
byssus on the surface of a
cancer cell, inhibiting the adherence and the attachment of the
cell A549 and inhibiting the metastasis of the
cell A549, is finally used for causing the anoikis of the cell, and therefore, has certain prevention and treatment effects of malignant tumor.