《黄帝内经》是现存重要的古典医籍，而《灵枢经》是其重要的组成部分，为后世中医学尤其是针灸学的发展奠定坚实的理论基础。“九针”之名始于《黄帝内经》。“九针”作为规范的名词术语在《黄帝内经》中多次出现,其中《灵枢经》的开篇即为《九针十二原》,可见，“九针”的重要性。随着时间的推移和针灸临床技术的不断进步，九针亦有众多演变，对《灵枢经》中关于九针的描述加以整理并综合分析，从九针的起源、针具的形状、不同主治证候以及历史演变等方面，探寻古人应用不同针具治疗相应疾患的规律；对九针的发展及现代应用加以总结，为今后针具的完善和创新提供借鉴作用。

Huang Di Nei Jing is the most important classical medical books. Ling Shu Jing is one of important parts in Huang Di Nei Jing, which lay a solid theoretical foundation for future generations of Traditional Chinese Medicine especially for acupuncture development. As a normative technical term, “nine needles” appears repeatedly in Huang Di Nei Jing, in which Ling Shu Jing set the Nine Needles and Twelve Source Acupoints as the first page. Therefore, the significance of “nine needles” is evident. With the passage of time and continuous progress of clinical technology of acupuncture and moxibustion, nine needles also have evolved numerous. In this paper, nine needles described in Ling Shu Jing were comprehensively analysed. From the origin of nine needles, the length of the needle shape, different syndrome and historical evolution, we hope to investigate the law that ancients can use different needles to treat the corresponding diseases, summarize the development of nine needles and modern applications, and provide reference for future improvement and reform of the needles.