Acupuncture Points Notebook

Location Guides:

: Xiaohai : Small Sea

SI-8 : Hand Taiyang Small Intestine 8

He-Sea and Earth point

Child point of the Small Intestine channel

In the depression between the tip of the olecranon process of the ulna and the tip of the medial epicondyle of the humerus.

Oblique distal or proximal insertion 0.5 - 1 cun, or perpendicular insertion 0.3 - 0.5 cun

The ulnar nerve lies deep to this point

TCM Actions:
Clears heat and dissipates swelling
Calms the spirit
Activates the channel and alleviates pain

TCM Indications:
  • Scrofula, swelling and pain of the throat, swelling of the cheek, swelling of the gums, swelling and pain of the elbow and axilla, toothache, tooth decay, wind dizziness, headache, deafness, yellow eyes, malaria.
  • Epilepsy, tongue thrusting, clonic spasm, mad walking, agitation of the Heart.
  • Pain of the neck, pain of the neck radiating to the elbow, pain of the scapula, pain of the postero-lateral aspect of the shoulder, pain of the upper arm and elbow, inability to raise the four limbs, lumbar pain radiating to the hypogastrium, lower abdominal pain.

    Superficial Innervation: Medial cutaneous nerve of the arm (C8 - T1) and ulnar nerve (C8 - T1)
    Dermatome Segment: T1

    In five element acupuncture this point is reduced to drain excess in the Small Intestine.


    Ling Shu Ch. 6 suggests piercing the He points of the Yang channels if a disease is in the Yang of the Yang realm (e.g. the skin). This would mean using this point, presumably needled at a very superficial level, to treat skin level disorders relating to this channel.

    Combining this with the needling techniques described in Chapter 7 we could suggest using either superficial needling here to influence pathogens in the skin, or leopard spot needling (three needles aimed at letting blood from each side) for pathogens in the Blood.

    Ling Shu Ch. 9, On Ends and Beginnings, advises that in the case of Heat associated with receding Yin Qi the Yang conduit should be pierced once and the Yin conduits twice. Based on other recommendation to use the He-Sea of the Yang conduits (Ch. 19) and the Yuan-Source with the Ying-Spring points (Chs. 6, 19 and 24) to clear Heat from the Zangfu, that would suggest this point, Shenmen He-7 and Shaofu He-8 as a protocol to clear Heat in the Heart/Small Intestine (although other chapters suggest the Heart channel is not treatable in Ling Shu acupuncture). Next it advises that in Cold associated with receding Yang Qi the Yang should be pierced twice and the Yin once but no such obvious protocol is evident for this situation. Another interpretation that would match with common practice today, based on the idea of odd numbers being Yang/moving/clearing while even numbers are Yin/tonifying/reinforcing, is that the points on the channel to be cleared are pierced on one side only while those on the channel to be tonified are pierced bilaterally.

    Ling Shu Ch. 19, on the Four Seasonal Qi, advises using the He-Sea points in autumn when diseases are in the Fu organs.

    Ling Shu Ch. 71, On Evil Visitors, says that when a depletion evil is in the Lung and Heart it remains in two elbows. Yuen's theory of the Divergent meridians suggests that they store pathogens at the major joints, depleting our resources while they do, which would make this a potential point for for the Heart/Small Intestine Divergent.


    In Tung acupuncture the Xin Men, Heart Gate, point is located near this point, 1.5 cun distal from the elbow on the Small Intestine channel. It is indicated for all kind of Heart conditions (Chu, 2015).


    In Mayan medicine:
    Pierced to treat pain in the shoulder caused by cold wind (Garcia, Sierra, Balam, 1999: Wind in the Blood)


    Medieval phlebotomy point (John de Foxton, 1408: Liber Cosmographiae,; Hans von Gersdorff, 1517: Feldtbüch der Wundartzney,


    In ayurvedic medicine:
    Kurpara marma point
    Size: 3 angula (cun)
    Structure: Joint
    Effect of Injury: Disability (vaikalyakar marma)
    (Harish Johari, 1996, Ayurvedic Massage, Sanatan Society; Anupama Bhattacharya, n.d. Marma Shastra)


    In Siddha medicine this point is referred to as Kaimuttuvarmam, "elbow vital spot" (Sieler, 2015, Lethal Spots, Vital Secrets, p.167).


    In Tibetan medicine:
    Moxa point (AMNH, Tibetan Medical Paintings)


    In Thai massage:
    Point along the outer Kalatharee sen line running from the lateral malleolus, up the sides of the leg, along the outer bladder channel, over the shoulder blade and down to the hands (Salguero & Roylance, 2011, Encyclopedia of Thai Massage)

    Reference Notes: (click to display)