Abstract: Laser cleaning is widely used in aerospace, marine, and transportation fields due to its advantages of high efficiency, high quality, safety, environmental friendliness, and ease of operation. This paper investigates the high-efficiency and high-quality cleaning process for oxide layers on T4003 stainless steel surfaces using a 200 W pulsed fiber laser. The surface morphology, roughness, and hardness were observed and measured to analyze the effects of laser power, scanning speed, and pulse width on oxide layer removal and surface quality.The results indicate that laser power significantly influences cleaning quality. The optimal cleaning effect was achieved with 200 W laser power, 10 ns pulse width, and 7000 mm/s scanning speed, where the oxide layer was completely removed without substrate remelting, and the hardness difference between cleaned and base materials was minimal,indicating the optimal processing outcome.