Due to their unique infrared optical properties, such as excellent transmission in infrared band, low phonon energy and good chemical stability, chalcogenide glass fiber has promising applications in many fields such as infrared imaging, laser transmission and sensing. At present, the preparation of chalcogenide glass optical fiber mainly includes doublecrucible method and rodintube method. The doublecrucible method is complicated, and the rodintube method needs to prepare highquality preforms in advance. In addition, both methods require high crystallization resistance of glass, which limits the development of new materials for chalcogenide glass optical fiber. In this work, the pulse injection technology was innovatively introduced into the field of chalcogenide glass fiber preparation, and the feasibility of this method for glass fiber preparation by drawing chalcogenide glass fiber core was explored. By applying continuous pulse perturbation to glass melt, a continuous jet was generated at the bottom hole of the crucible and solidified during falling, resulting in glass fiber core. Using this method, a chalcogenide glass fiber with the composition of Ge28Sb12Se60 was successfully prepared. The pulse injection method is simple and easy to operate, and the pulling of chalcogenide glass fiber is achieved by continuous and regular pulses and pressure difference between the inside and outside of crucible, which has more abundant control means than traditional gravitybased glass fiber pulling. This method provides a potential reference for the preparation of new chalcogenide glass fiber.