Process of removing multimer from human albumin

The invention provides a process of removing multimer from human albumin. The process comprises the following steps of S1, component separation; S2, human albumin purification procedure; S3, pasteurization process; S4, chromatography procedure; S5, secondary pasteurization procedures; and S6, sterile filling procedure. According to the human albumin preparation process provided by the invention, the process steps, including an ion exchange chromatography process and secondary pasteurization are added after a pasteurization process, and human albumin is prepared by replacing a traditional pasteurization method with a double pasteurization method, so that the quality of a product is improved, and the content of the multimer in the product is effectively lowered; and by effectively removing the contents of the multimer and impure proteins in the product, the quality of the human albumin is improved, occurrence of adverse reactions in the use process of the product is lowered, the market competitiveness of the hu