By collecting and analyzing the explanation/conception, acupoint name, acupoint location, indications, acupuncture and moxibustion techniques and contraindications of he-sea point recorded in Neijing (Inner Canon of Yellow Emperor) and Nanjing (Yellow Emperor 's Classic of Eighty-one Difficult Issues), it is found that conception of he-sea point of five-shu points has been specifically formed, the names of he-sea points of eleven meridians, the locations and the ways to locate them were recorded. But, the summaries relevant to the indications of the many he-sea points have not been included in teaching materials, thus, it needs to be further analyzed. The acupuncture-moxibustion techniques at he-sea point are flexible and the attention should be paid to distinguish "needling he-sea point in autumn" from "needling he-sea point in winter". Besides, the consideration should be given on coma/fainting induced by arterial bleeding when needling he-sea point, as well as the joint motor impairment caused by over deep insertion in acupuncture.
梳理《内经》《难经》中合穴的释义、穴名、定位、主治、刺灸法、禁忌等内容，发现其中已形成特指五输穴之合穴的概念义项；记载了十一经合穴的穴名、定位及其取穴方法；其中有诸多合穴主治的总结性概括未纳入教材，且有待解析；合穴刺灸方法灵活多变，且需注意“秋刺合”与“冬刺合”之别；针刺合穴需注意大动脉出血引发的昏厥及针刺过深导致的关节活动障碍。.
Keywords: Nanjing; Neijing; he-sea point; theory.