Method for extracting human fibrinogen from component I through column chromatography

The invention relates to a method for extracting human fibrinogen from a component I through column chromatography. The problem of low purity, high stability and high yield of the human fibrinogen can be effectively solved. The method comprises the following steps of: (1) dissolving and filtering FI precipitate; (2) inactivating S/D ; (3) precipitating glycine for the first time; (4) dissolving and filtering the precipitate obtained in the precipitation for the first time; (5) performing column chromatography; (6) precipitating glycine for the second time; (7) dissolving and filtering the precipitate obtained in the precipitation for the second time; (8) precipitating; (9) packing the product in bags and freeze-drying the product; and (10) inactivating the product through hot air. In the method, glycine serves as a precipitator, so the finally obtained product contains about 0.5 percent of glycine; and the glycine and arginine hydrochloride are combined to serve as a stabilizer of the product, so the stabilit