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Chapter 6 of 16
奇经八脉考
The Yang Qiao Meridian is a divergent branch (secondary meridian) of the Foot Taiyang Bladder Meridian. Its pathway is as follows:
🌿 It originates at the heel, emerging below the lateral malleolus, passing through the Shenmai point (BL-62) of the Foot Taiyang Meridian (located in the depression five fen below the lateral malleolus, near the white flesh border beside the nail), then circles behind the heel, with the Pucan point (BL-61) as its root (in the depression below the calcaneus, palpable when the sole is arched).
💨 It ascends to three cun above the lateral malleolus, where the Fuyang point (BL-59) serves as its Xi-Cleft point (located three cun above the lateral malleolus, belonging to the Foot Taiyang Meridian), and continues straight upward, traveling along the lateral aspect of the thigh, passing through the hip region behind the costal margin.
🩺 It ascends to the depression at the upper border of the scapula beneath the large bone at the posterior shoulder, where it meets the Hand Taiyang Small Intestine Meridian and the Yang Wei Meridian at the Naoshu point (SI-10). It then travels along the lateral aspect of the scapula, converging with the Hand Yangming Large Intestine Meridian at the Jugu point (LI-16) (located in the depression between the two-pronged bone at the tip of the shoulder). Continuing further, it meets the Hand Yangming and Hand Shaoyang Sanjiao Meridians at the Jianyu point (LI-15) (located in the depression between the bone ends at the shoulder tip, where a gap appears when the arm is raised).
🔥 It ascends past Renying (ST-9), running alongside both corners of the mouth, where it converges with the Hand Yangming, Foot Yangming, and Conception Vessel at the Dicang point (ST-4) (four fen beside the corner of the mouth, near the subtle pulsation below). Together with the Foot Yangming Meridian, it ascends to the Juliao point (ST-3) (eight fen beside the nostril, level with the pupil, aligned with Shuigou), and converges again with the Conception Vessel at the Chengqi point (ST-1) (seven fen below the eye, in the depression level with the pupil).
🌊 It reaches the inner canthus (inner corner of the eye), where it joins with the Hand Taiyang, Foot Taiyang, Foot Yangming, and Yin Qiao Meridians — five meridians altogether — at the Jingming point (BL-1). From Jingming, it continues upward, entering the hairline, descending behind the ear, and finally terminating at the Fengchi point (GB-20) (in the depression at the hairline behind the ear, beside the occipital bone).
The entire meridian traverses twenty-two acupuncture points in total.
According to the Nan Jing (Classic of Difficulties): The Qiao Meridian ascends from the foot to the eye, measuring seven chi and five cun in length, with the two Yin and Yang Qiao Meridians totaling one zhang and five chi combined.
According to the Jia Yi Jing (A-B Classic of Acupuncture): The Qiao Meridian is divided into Yin and Yang — how is its length calculated? The answer: In males, the Yang Qiao is taken as the primary meridian; in females, the Yin Qiao is taken as the primary meridian. The one calculated as the "primary meridian" is included in the total length, while the one not calculated serves as the "connecting vessel." The movement of qi within the human body is like the flowing of water or the unceasing motion of the sun and moon — never stopping. Therefore, the Yin meridians circulate through the five viscera, and the Yang meridians circulate through the six bowels, moving in cycles like a ring without beginning, whose point of origin is unknown, repeating endlessly. The overflow of qi nourishes the viscera internally and moistens the skin and interstitial spaces externally.
The core principle of the Yang Qiao Meridian lies in "Yang being active and governing the exterior."
The name "Qiao" carries the meaning of "agility and swiftness." The Yang Qiao Meridian originates at the heel, penetrates upward through the lateral aspect of the body, and ultimately reaches the inner canthus. This pathway reflects several key medical principles:
First, the Yang Qiao governs the Yang of both sides of the body. The Su Wen (Plain Questions) states, "When the Yang Qiao is diseased, the Yin side is relaxed while the Yang side is tense." Ancient scholars believed the Yang Qiao Meridian presides over the movement of Yang qi on the lateral aspects of the body, in opposition to the Yin Qiao Meridian — together, they regulate lower limb movement and the Yin-Yang balance of both sides of the body.
Second, the Qiao Meridians are closely related to opening and closing of the eyes. Both the Yang Qiao and Yin Qiao ultimately converge at the inner canthus (Jingming point). Ancient scholars held that the waxing and waning of Yin and Yang in the two Qiao Meridians determines eye opening/closing and sleep rhythms — as stated in the Ling Shu (Spiritual Pivot): "When Yang qi is exuberant, the eyes open wide; when Yin qi is exuberant, the eyes close." When Yang Qiao qi is strong, the person is awake with eyes open; when Yin Qiao qi is strong, the person closes the eyes and feels drowsy.
Third, the Qiao Meridian embodies the "network-like" characteristics of meridian circulation. The original text clearly demonstrates that the Yang Qiao Meridian converges multiple times with the Hand/Yang Ming, Hand Taiyang, Hand Shaoyang, and Conception Vessel along its pathway. This pattern of "one vessel connecting many meridians" illustrates that the Eight Extraordinary Meridians are not isolated linear channels, but rather construct a three-dimensional intersecting energy network that coordinates the functions of multiple primary meridians.
Fourth, the Jia Yi Jing's statement "in males, count the Yang; in females, count the Yin" reflects the ancient medical way of thinking that incorporates gender differences into the measurement of meridian qi and blood — male vital activities are dominated by Yang, while female vital activities are dominated by Yin. The metaphor of "flowing like water, moving unceasingly like the sun and moon" reveals the continuity and cyclicality of meridian qi movement — a systemic view of life that was remarkably advanced given the cognitive conditions of that era.
From a modern viewpoint, the pathway of the Yang Qiao Meridian covers the lateral aspect of the lower limb (the peroneal muscle group region), the scapular girdle, the face, and the periorbital area — regions that overlap to a certain degree with the innervation territories of the sciatic nerve branches (common peroneal nerve), the facial nerve, and the oculomotor nerve. The pathway that ancient scholars summarized through long-term clinical observation and meridian sensation transmission phenomena does have corresponding musculature-nerve-vascular anatomical foundations. This indicates that the ancients' understanding of body-surface structures was not fabricated from imagination but was grounded in empirical observation.
The theory that "the Qiao Meridian governs eye opening and closing" clinically corresponds to certain manifestations of neurological dysfunction, such as eyelid opening/closing disorders and incoordination of limb movements. Modern TCM scholars believe that the functions of the Eight Extraordinary Meridians are more akin to an integrated description of the neuro-endocrine-immune network regulatory system rather than purely anatomical conduits.
It should be honestly acknowledged that the ancient record of "the Qiao Meridian measuring seven chi and five cun" belongs to the measurement system of that era and cannot be precisely correlated with modern anatomy; likewise, "in males, count the Yang; in females, count the Yin" carries the color of Han-dynasty Yin-Yang philosophy and should not be interpreted mechanistically. However, the holistic concept of qi and blood "irrigating the viscera internally and moistening the skin externally" reflects TCM's intellectual advantage of never separating the local from the whole — a principle aligned with modern systems physiology's basic tenet that "the human body is a coordinated, unified whole."
The Yang Qiao Meridian governs the Yang of the entire body, communicates with the eye orifices, and traverses the lateral aspect of the lower limbs. Accordingly, several general maintenance approaches for daily life (non-therapeutic suggestions) may be offered:
Related Concepts
Further Reading
This content is based on classical Chinese medicine texts and is provided solely for traditional cultural learning and study. It does not constitute any medical diagnosis, prescription, or treatment advice; please consult a healthcare professional if you experience discomfort.