PET-based biodegradable fibers were obtained using two-step process; (1) melt spinning at several winding speeds, and (2) hot-drawing at various drawing rates. Two kinds of polymers were used in this study and the fibers from them were characterized by several analyzing techniques such as tensile test, X-ray diffraction, scanning electron microscope, etc. At fixed extrusion rate, the mechanical properties of as-spun fibers were dependent on the winding speed. The higher winding speed resulted in the higher modulus and strength, and the lower elongation at break. At fixed drawing temperatures of rollers, the mechanical properties of the drawn fibers were also strongly dependent on the drawing rates. The drawn fibers showed the increased orientation upto 94% and breaking strengths of 4.2~4.8 g/d.