### Analysis of the theory of "Yi Huo and Tu" in Traditional Chinese Medicine #### **Paragraph 1: Core Concepts and Theoretical Framework**

In traditional Chinese medicine, "Yi Huo Bu Tu" is a treatment method that enhances the function of the spleen and stomach (Earth) by warming and tonifying the fire of life (kidney yang). It is an application of the theory of "the mutual growth of the five elements". The core logic is that "fire generates earth", that is, sufficient kidney yang can promote the transportation and transformation of the spleen and stomach and improve digestion and absorption disorders. This theory is applicable to symptoms such as diarrhea, edema, and chills caused by spleen and kidney yang deficiency. Classic prescriptions such asFuzi Lizhong Pills,Sishen Pill. It is necessary to distinguish the primary and secondary relationship between "replenishing fire" and "replenishing earth" to avoid the abuse of warming and drying drugs.

#### **Paragraph 2: Theoretical basis and clinical application**

“Replenishing fire and replenishing earth” comes from the idea of “reducing fire and replenishing energy” in the Yellow Emperor’s Internal Classic. Zhang Jingyue in the Ming Dynasty further proposed that “when the fire in the Mingmen is weak, the spleen and earth will be unlucky”. There are two common types of clinical applications: 1)Kidney yang deficiency affects the spleen and stomach(For diarrhea at the end of the lunar month, and the grain does not melt after the grain is gone), choose Sishen Pills (Psoralen, Evodia, etc.); 2)Deficiency of spleen and stomach combined with insufficient kidney yang(Cold and painful epigastrium and abdominal pain), give Fuzi Lizhong Pills (Aconite, dried ginger, Atractylodes). Modern research has confirmed that such prescriptions can regulate intestinal flora and improve energy metabolism.

#### **Paragraph 3: Classic prescriptions and representative drugs**

The following table shows representative Chinese patent medicines for “Yihuo and Nourishing Earth”:

Prescription name	Main ingredients	Efficacy	Manufacturer example
Sishen Pill	Psoralen, nutmeg, Evodia	Warms the kidneys, warms the spleen, astringes the intestines and relieves diarrhea	Beijing Tong Ren Tang, Lanzhou Foci Pharmaceutical
Fuzi Lizhong Pills	Aconite, Codonopsis pilosula, Atractylodes macrocephala, dried ginger	Warm yang, dispel cold, replenish qi and strengthen the spleen	Zhongjing Wanxi Pharmaceutical, Jiuzhitang

It needs to be used under the guidance of a physician and avoid taking it with cold and cooling drugs.

#### **Paragraph 4: Precautions and Taboos**

This treatment method requires strict syndrome differentiation.Yin deficiency and internal heatorExcessive heat syndromeIt is contraindicated by patients (such as red tongue and yellow coating, constipation). Long-term use of yang-warming medicine may damage yin, so it needs to be combined with yin-nourishing medicine (such as Rehmannia glutinosa). Modern Chinese patent medicines such asJingui Shenqi Pills(Jichuan Pharmaceutical) Although it contains aconite, its toxicity has been reduced through compatibility, making it more suitable for chronic conditioning.

#### **Paragraph 5: Summary and Extension**

“Replenishing fire and nourishing soil” embodies the holistic view of traditional Chinese medicine and solves digestive system problems by regulating the kidney-spleen axis. Modern research has expanded its use in irritable bowel syndrome, chronic colitis, e.g.Gubenyichang tablets(Jilin Aodong) was developed based on this theory. When using, it must be combined with physical identification to avoid "deficiency without supplementation".

**References** 1. "Jingyue Complete Book·Spleen and Stomach Theory" (Ming Dynasty Zhang Jingyue) 2. "Pharmacopoeia of the People's Republic of China" (2020 edition) 3. Beijing Tongrentang, Zhongjing Wanxi Pharmaceutical official website product description