To conduct a visualization analysis of the research status, hotspots, and development trends of brain-computer interface (BCI) technology in the rehabilitation of spinal cord injury (SCI) patients. Methods: Relevant literature about BCI technology applications in SCI was retrieved from the Web of Science Core Collection database from its inception to July 30, 2023. The data were subjected to bibliometric analysis using CiteSpace 6.1.R6 and Microsoft Excel 2023 software. Results: A total of 400 articles were included in the bibliometric analysis, including 310 journal articles and 90 reviews. The annual publication of literature in this field has shown an increasing trend over the past two decades. The most productive country, author and institution is the United States, Collinger Jennifer L, and Graz University Technology, respectively. The journal with the highest citation is J Neural Eng. High-frequency keywords such as "functional electrical stimulation", "movement" and "motor imagery" were identified, leading to 15 major clusters and 16 prominent burst terms. Notably, terms like "restoration", "interface", "walking", and "gait" have been continuously prominent since 2018, indicating potential future research trends. Conclusion: The application of BCI technology in SCI rehabilitation continues to increase in research popularity. The current efficacy mainly focuses on the recovery of upper limb movement and hand grip function in quadriplegia patients caused by SCI, with the central mechanism focusing on inducing neuroplasticity after SCI. Future research trends and hotspots are likely to explore the rehabilitation efficacy and underlying mechanisms of BCI technology in improving the walking or gait function of lower limbs in patients with SCI.