The Sun's acupuncture includes Sun's painless acupuncture technique, Sun's reinforcing-reducing method and Sun's hand-manipulating method. The key points of Sun's painless acupuncture method are summarized as one fast manipulation, two slow manipulations and finger pressure during needle insertion. While the key points of Sun's reinforcing-reducing process refers to needle insertion firstly, twisting secondly and followed by scraping the handle of the needle. The contents of Sun's hand-manipulating method includes short hand-manipulating, continuous hand-manipulating and intermittent hand-manipulating. There are four characteristics of Sun's reinforcing-reducing method. The first is dexterity and gentleness; the second is the combination of strong stimula tion and weak stimulation; the third characteristic is the requirement of the same manipulation rhythm during the whole needling process; and the fourth is to use different stimulus to distinguish reinforcing and reducing. Emergent cases treated with Sun's acupuncture method are also provided in this article for reader's references.