The invention relates to a surface hydrophilic nanometer finishing method of a keratin porosint, which can fix nanometer materials on various fabrics through soaking-rolling-baking, increase the hydrophilicity and comfortableness of fabrics and wool fabrics in particular, and is in accordance with the new requirements of fabric properties from the people. The surface hydrophilic nanometer finishing method comprises the following steps: (1) prepare the nanometer finishing liquid according to steps; (2) soak the fabrics waiting for treatment in ethanol water, take the fabrics out, and soak the fabrics in the nanometer finishing liquid prepared in step (1) for constant temperature finishing; (3) rinse, roll and dry the fabrics treated in the nanometer finishing liquid.