The history of cryocooler conduction cooled solid-nitrogen protected HTS magnet system is introduced briefly, the characteristics of this system is analyzed.

• 简要的回顾了制冷机传导冷却固氮保护的高温超导磁体系统的发展历史,介绍了此磁体系统的特点,并展望其未来发展趋势。