Abstract: The global development and exploration of marine resources is intensifying, and environmental protection requirements are becoming increasingly stringent. Fishing vessels are evolving towards higher efficiency and greater intelligence. Traditional fishing vessel hydraulic systems generally suffer from drawbacks including low efficiency, high energy consumption, and low control accuracy. These issues have become critical constraints on enhancing the automation level and operational efficiency of fishing vessels. In recent years, load-sensing control technology has gradually been applied to fishing vessel hydraulic systems due to its excellent control characteristics. This paper first outlines the operating principles, technical characteristics, and current state of research regarding load-sensing control technology. On this basis, it focuses on analyzing the application characteristics and energy-saving effects of this technology across different fishing methods, including trawl fishing, purse seine fishing, and longline fishing. Practical applications demonstrate that load-sensing control technology can effectively enhance the dynamic response performance of hydraulic systems, enabling on-demand matching of pressure and flow, and significantly reducing energy consumption during fishing vessel operations. However, this technology currently has shortcomings in terms of adaptability to complex operating conditions, equipment cost control, and the reliability of long-distance signal transmission. In the future, with the continuous development of intelligent algorithms, electro-hydraulic integration, and the Internet of Things, the application of load-sensing control technology will drive fishing vessel hydraulic systems towards greater energy efficiency, reliability, and intelligence, providing technical support for the green development of the fishing industry.