Abstract: This study aims to investigate the repellent effects of different repellent methods (light, sound, bubble curtains) on juvenile Sebastes schlegelii, providing theoretical basis for the selection of fish repellent equipment, design of fish barriers, and research on fish behavior in marine engineering scenarios (such as nuclear power plant waters). Set lighting conditions (light color: white light, blue light, green light; light intensity: 5 000, 8 000 and 10 000 lx), sound conditions (sound frequency: 150, 300 and 450 Hz; sound pressure level: 130, 140and 150 dB re 1 µPa), and bubble curtain conditions (air flow rate: 60, 120 and 180 L/min; fish density: 1.56, 2.35 and 3.13 ind./m²) on the repellent effect of juvenile Sebastes schlegelii in indoor tank experiments. The bubble curtain was most effective in repelling juvenile black rockfish, with optimal results achieved under conditions of 120 L/min air flow and a fish density of 2.35 ind./m². The repulsion rate was 66.7%±5.4%, and the average repulsion distance was (2.35±0.16) m. Lighting and sound were not significantly effective in repelling juvenile black rockfish. The repellency rate for sound was below 30%, and the repellency rate for light did not exceed 25%. Based on the research results on the repulsion rate and average distance of repulsion of juvenile black rockfish under different repulsion methods, it can be concluded that bubble curtains have a significant repulsion effect on juvenile black rockfish under specific air volume and fish density conditions, while light and sound have weaker repulsion effects.