To provide a woven or knitted fabric which comprises polyester-based fibers and animal fibers and/or regenerated cellulosic fibers, has an excellent color developing property and excellent washing durability, and is especially optimal to the use of student wears.

This woven or knitted fabric is characterized by weaving or knitting fibers at least partially using polyester-based fibers having fine pores on the fiber surfaces by an alkali reduction treatment using sodium hydroxide and/or potassium hydroxide. In more detail, the woven or knitted fabric is characterized by weaving or knitting yarns at least partially using composite yarns prepared by blending polyester-based fibers having fine pores on the fiber surfaces by a special alkali reduction treatment using with animal fibers and/or regenerated cellulosic fibers.