In this research, PZT fibers were fabricated using PZT-5A commercial powder, polymeric additives, and deionized water as a solvent. The rheological behavior of different pastes with various amounts of solids and additives was investigated, and the best paste was selected for syringe injection (extrusion process). Meanwhile, the paste containing 85 wt % solid content and 1 wt % glycerol, prepared by a 15 wt % PVA solution, exhibited the best rheological behavior. The resulting fibers were dried at 100 °C, and the burnout process was conducted at 600 °C with the heating rate of 1 °C/min for 2 hours. The sintering process occured in the temperature range of 1220-1270 °C for 2.5-4 hours. X-Ray Diffraction (XRD) analysis conducted for phase investigations revealed that the fibers sintered at 1220 °C were characterized by a single-phase perovskite structure. Further, the peak splitting confirmed the ferroelectric nature of fiber. However, at higher sintering temperatures, the secondary peaks attributed to zirconium and titanium oxides appeared in the fiber diffraction patterns. According to Scanning Electron Microscope (SEM) images from the surface of the fibers, the fibers sintered at 1220 °C for 2 hours were devoid of any cracks and possessed an acceptable density. Additionally, based on the SEM images from the fracture surface of the fibers, the microstructure of this sample comprised cuboid grains with the average size of 1.5 μm, which is half of the average grain size of bulk PZT with spherical grains at its optimum sintering temperature.