Zhongwan Point (RN-12 / Stomach Cavity Center, also known as Taicang, Weiwan, Shangji, Weiguan, Zhongguan)
Warms the middle and disperses cold, strengthens the spleen and harmonizes the stomach, moves qi and resolves stagnation, ascends the clear and descends the turbid. Based on its properties, it is clinically used for acute and chronic gastritis, peptic ulcers, gastric ptosis, gastric spasm, diaphragmatic spasm, biliary colic, hepatitis, and intestinal disorders.
Indications
Spleen-stomach disorders, mental disorders, and asthma. (1) Stomach disorders: Stomach pain, gastric distension, vomiting, hematemesis, acid regurgitation, indigestion, gastric dilatation, gastric ptosis. (2) Other fu-organ disorders: Diarrhea, dysentery, constipation, hematochezia, abdominal distension, borborygmus, jaundice, cholecystitis, hepatitis, pancreatitis. (3) Phlegm disorders: Dizziness, stroke, epilepsy, cough, wheezing, edema. (4) Deficiency patterns and chronic diseases: Post-illness debility, middle qi deficiency, chronic diseases, diabetes, flaccidity syndrome. (5) Others: Insomnia, frontal headache, alopecia, chilblains, nocturnal crying, chest impediment, etc.
Precise Location
In the upper abdomen, 4 cun above the umbilicus, on the anterior midline – at the midpoint of the line connecting the xiphisternal junction and the umbilicus.
Location Method
Lie supine. On the anterior midline, at the midpoint of the line connecting the xiphisternal junction and the center of the umbilicus – that is the point.
Massage Method
Cupping: Apply retained cupping with a fire cup. Press and knead Zhongwan with the thumb about 200 times, or for 3–5 minutes, to treat abdominal pain and asthma. Therapeutic actions: Warms the middle and disperses cold, strengthens the spleen and harmonizes the stomach, moves qi and resolves stagnation, ascends the clear and descends the turbid.
Compatibility
Asthma: Combine with Danzhong (RN-17), Tiantu (RN-22), and Fenglong (ST-40). Various stomach disorders: Combine with Neiguan (PC-6) and Zusanli (ST-36). Diarrhea: Combine with Tianshu (ST-25), Shangjuxu (ST-37), and Zusanli (ST-36). Resolve dampness and treat jaundice: Combine with Yinlingquan (SP-9), Zhiyang (GV-9), Wangu (SI-4), and Sanyinjiao (SP-6). Various chronic diseases: Combine with Guanyuan (RN-4), Zusanli (ST-36), and Sanyinjiao (SP-6). All phlegm-damp disorders: Combine with Fenglong (ST-40) and Yinlingquan (SP-9). Neck pain: Combine with Tianzhu (BL-10). Chest and back pain: Combine with Shenzhu (GV-12). Upper limb pain: Combine with Quchi (LI-11). Lower limb pain: Combine with Zusanli (ST-36). Lumbar pain: Combine with Guanyuan (RN-4) and Shenshu (BL-23). Hematochezia, hematemesis, and epigastric distension with pain: Combine with Qihai (RN-6).
Efficacy & Actions
Zhongwan belongs to the Conception Vessel (Ren Mai) and is the meeting point of the Ren Mai with the Hand Taiyang, Hand Shaoyang, and Foot Yangming meridians. It is the Mu-Front point of the Stomach Meridian and the Fu Hui point among the Eight Influential Points. It strengthens the spleen and harmonizes the stomach, moves qi and resolves stagnation, and ascends the clear and descends the turbid. It has broad clinical applications, treating all fu-organ disorders – especially stomach disorders. First documented in Zhenjiu Jiayijing. "Wan" refers to the stomach cavity; located at the center of the stomach region – hence the name Zhongwan (Stomach Cavity Center). It is also known as "Taicang," "Weiwan," "Shangji," "Weiguan," and "Zhongguan." (1) Key Point for Spleen-Stomach Disorders: As the Mu-Front point of the Stomach, where stomach essence qi gathers, fu-organ disorders are treated with Lower He-Sea and Mu-Front points. Located directly corresponding to the stomach, it regulates stomach qi. The stomach governs receiving and ripening food and drink; stomach qi descends – if function is impaired, Zhongwan regulates it. Used for stomach pain, vomiting, acid regurgitation, gastric ptosis, gastric spasm, and indigestion. The Spleen and Stomach are internally-externally related – they are the root of postnatal life and the source of qi and blood. Thus this point is used for spleen-stomach weakness and qi-blood deficiency. Regardless of excess, deficiency, cold, or heat – reinforcing benefits the spleen and stomach; reducing strengthens the spleen and resolves dampness, regulates qi and descends counterflow, resolves stagnation and harmonizes the stomach; moxibustion warms the middle and disperses cold for cold patterns; needling clears the stomach and descends turbid heat for heat patterns. (2) Key Point for Phlegm-Damp Disorders: The Xingzhen Zhiyao Ge states: "For needling phlegm disorders, first needle Zhongwan and Zusanli." Zhongwan strengthens the spleen and guides dampness – when earth is strong, it controls dampness. Spleen-stomach weakness fails to transform water-damp, accumulating into phlegm in the stomach and ascending to the lungs – hence the saying: "The Spleen is the source of phlegm production; the Lung is the vessel for storing phlegm." Needling Zhongwan strengthens the spleen, guides dampness, warms the middle, and transforms phlegm – the primary point for phlegm-damp disorders, often combined with moxibustion. (3) Regulates the Entire Body: All five zang and six fu are nourished by the Stomach – the root of postnatal life and the source of qi and blood, located in the middle. Zhongwan has systemic therapeutic effects, especially for chronic diseases unresponsive to prolonged treatment, post-illness recovery, and middle qi deficiency. (4) Point for Fu-Organ Disorders: As the Fu Hui point – all six fu are nourished by the Stomach, and the Stomach is the chief of the six fu. The Xunjing Kaoxue Bian states: "Zhongwan treats all spleen-stomach disorders without exception." Zhang Zhongjing stated: "This point is the Fu Hui – all fu-organ disorders should be treated here." Beyond stomach disorders, it is also used for intestinal and biliary disorders. (5) Treats Limb Pain: By strengthening the spleen and resolving dampness, it treats muscle and joint pain caused by phlegm-damp flowing into muscles and joints (knee pain, ankle pain, metatarsophalangeal joint pain), as well as chest tightness, chest pain, and lumbar-back pain due to phlegm-damp accumulation.
Contraindications
Located in the abdomen, with gastrointestinal organs beneath – needling depth should be carefully controlled, especially in thin patients, to prevent internal organ injury. Moxibustion is permissible and is a commonly used moxibustion point in clinical practice.
