Microbial contamination is one of the key factors causing product deterioration, short shelf life and unqualified sanitary indicators in biological products, beverages and pharmaceutical liquids. Traditional high-temperature sterilization easily damages heat‑sensitive active ingredients, while chemical sterilization causes reagent residue and quality changes. Membrane aseptic filtration realizes efficient removal of bacteria, spores and microorganisms through precise physical screening at room temperature. It achieves sterile liquid standards without thermal damage and chemical pollution, becoming the core aseptic processing technology for modern biological and pharmaceutical industries.