Abstract: The structure and properties of microfiber leather are close to the leather, but the hygienic properties, hand feel, and softness of leather are better than that of microfiber leather. Therefore, the properties of modified microfiber leather are the main research direction. Based on the application of anionic fatliquoring agent in modified and unmodified microfiber leather base cloth, the paper determines the best fatliquoring mass fraction, time and process. By analyzing the hygienic property of the products, such as air permeability, moisture permeability, as well as peel strength, tear strength, elongation at break, the research showed that the hand feel, softness and the hygienic property of the microfiber leather has been improved after the fatliquoring process.

Key words: anionic; fatliquoring; microfiber leather; hygienic property