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In the water treatment process,the micro-organisms in the water will lead to membrane bio-fouling which limits the application of membrane technique [1].Therefore,the development of anti-bio-fouling membrane is of great significance.Polysulfone (PS) or polyethersulfone (PES) ultrafiltration (UF) membranes have a wide application in industrial area.There have been many reported cases of hydrophilic modification of PS or PES UF membrane using TiO2 particles [2-4].Ag+ and Cu2+ are usually used as the antibacterial agent [5-7].However,the application of in the UF membranes has not been reported.On the other hand,compared with single-pore hollow fiber membrane,multi-pores hollow fiber membrane has excellent mechanical strength and burst pressure.