TB8 Three Yang Connecting Point

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

TB8 (Sānyángluò, “Three Yang Connecting Point”) is the Luo-Connecting Point of the Three Hand Yang Channels point of the Triple Burner Meridian. It is located on the dorsal aspect of the forearm, 4 cun proximal to the dorsal wrist crease, between the radius and the ulna. This is 1 cun proximal to Zhigou (TB6). It unblocks the channels and connecting vessels, clears heat, resolves obstruction, opens the orifices, and calms the spirit.

Location

On the dorsal aspect of the forearm, 4 cun proximal to the dorsal wrist crease, between the radius and the ulna. This is 1 cun proximal to Zhigou (TB6).

Needling

Perpendicular insertion 0.5 to 1.2 cun.

M
u
l
t
i
p
l
e
c
l
a
s
s
i
c
a
l
s
o
u
r
c
e
s
,
i
n
c
l
u
d
i
n
g
t
h
e
J
i
a
Y
i
J
i
n
g
,
Q
i
a
n
J
i
n
Y
a
o
F
a
n
g
,
Q
i
a
n
J
i
n
Y
i
F
a
n
g
,
a
n
d
Z
h
e
n
J
i
u
D
a
C
h
e
n
g
,
e
x
p
l
i
c
i
t
l
y
p
r
o
h
i
b
i
t
n
e
e
d
l
i
n
g
t
h
i
s
p
o
i
n
t
.

TCM functions

Unblocks the channels and connecting vessels, clears heat, resolves obstruction, opens the orifices, and calms the spirit..

Indications

Sudden deafness, sudden muteness or aphonia, toothache,somnolence, body does not want to move, internal injury, deficiency..

Luo-Connecting Point of the Three Hand Yang Channels

Clinical notes

Classically, Sanyangluo is a crucial point for acute conditions affecting the sensory orifices, particularly sudden deafness and muteness. Its function extends to systemic issues like somnolence and a feeling of bodily heaviness or unwillingness to move. Despite the strong classical prohibition on needling, it was clearly used in combinations, suggesting that moxibustion was the primary method of stimulation for its indications.

On the Triple Burner channel

TB8 is one of 23 points on the Triple Burner Meridian. Nearby points:

TB4TB5TB6TB7TB9TB10TB11TB12

Frequently asked questions

Where is TB8 located?

TB8 (Sānyángluò) is located on the dorsal aspect of the forearm, 4 cun proximal to the dorsal wrist crease, between the radius and the ulna. This is 1 cun proximal to Zhigou (TB6).

What is TB8 used for?

TB8 unblocks the channels and connecting vessels, clears heat, resolves obstruction, opens the orifices, and calms the spirit. Common clinical indications include sudden deafness, sudden muteness or aphonia, toothache,somnolence, body does not want to move, internal injury, deficiency.

How is TB8 needled?

Perpendicular insertion 0.5 to 1.2 cun. Caution: Multiple classical sources, including the Jia Yi Jing, Qian Jin Yao Fang, Qian Jin Yi Fang, and Zhen Jiu Da Cheng, explicitly prohibit needling this point.

Which meridian is TB8 on?

TB8 is a point on the Triple Burner Meridian (Sān Jiāo).

Interactive body mapConditions & evidenceFind an acupuncturistTCM glossary
⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.