The Yellow Emperor’s Classic of Internal Medicine is the foundation of Chinese medicine, and many of its theories are still guiding our medical practice today. The author read the Nei Jing in his spare time to summarize the discussion of vertigo in the Nei Jing and to find the rules of treating vertigo in the Nei Jing in order to guide our future clinical practice. Please correct me for any shortcomings due to the shortage of time. The causes of vertigo are complex and there are many kinds of vertigo, both deficiency and actual evidence, and mixed evidence of deficiency and actuality, but they are mainly reflected in the following aspects: 1. Theory of deficiency evidence: According to Nei Jing, part of vertigo is caused by deficiency evidence. The Spiritual Pivot – Mouth Questions Chapter says: “Insufficient Qi in the upper part of the body makes the brain dissatisfied, the ears bitter, the head bitterly inclined, and the eyes dizzy.” Insufficient Qi in the upper part of the body, and therefore the brain is not full of Qi and blood. Qi is the driving force of the blood, and with insufficient Qi, the blood, energy, and nutrients cannot reach the head, so there will be such things as “the brain feels empty; the ears feel tinnitus, and the neck cannot support the head because of insufficient Qi. All this indicates that the deficiency of qi and the failure of qing-yang to rise, and the inability of the head orifice to feed itself, causes the vertigo of deficiency. In Ling Shu – Wei Qi Disorder, there is a sentence that says, “If the lower part of the body is deficient, there will be syncope; if the lower part of the body is in full bloom, there will be heat; if the upper part of the body is in full bloom, there will be dizziness; if the upper part of the body is in full bloom, there will be heat and pain”. The phrase “syncope” refers to the coldness of the lower extremities; if the lower qi and blood are sufficient, the body will be warm; if the upper qi and blood are deficient, the body will become dizzy and dizzy. Therefore, in general, the understanding of vertigo in Nei Jing is mostly based on deficiency evidence, considering that qi is the driving force to transport essence and nutrition. In the “Ling Shu – Sea Theory”, “if there is a surplus of marrow sea, it will be light and strong, and it will be too much; if there is a deficiency of marrow sea, the brain will turn to tinnitus, the shins will be sore and dizzy, the eyes will see nothing, and the eyes will be lazy and restless.” People have four seas, where is the sea of marrow? “If there is a surplus of marrow, the brain feels lighter and more powerful, so it exceeds the limit. This paragraph is still about a deficiency evidence. It can be seen that Qi deficiency is the main cause of dizziness. The Spiritual Pivot – Meridians Chapter says: “If the Governor’s Vessel is real, the back is stiff; if it is deficient, the head is heavy and shakes high. If the five yin qi are all extinct, the eye system will turn, and if it turns, the eye will move. The back is stiff if the Governor’s Vessel is strong, and the head feels heavy if it is deficient, also talking about the deficiency evidence that causes dizziness. All these indicate that deficiency of Qi and blood in the five viscera leads to dizziness. 2. Wind theory: The basic theory of Chinese medicine says that wind is a yang evil, easy to attack the yang position; wind is good at moving and changing several times; wind evil is mostly mixed with yang evil. The head is the highest, the Yang position of the body, so the wind is most likely to attack the head. This statement clearly points out that most of the dizziness is related to the liver, which has far-reaching significance for later generations, and later medical practitioners developed the theory of dizziness caused by internal wind due to internal movement of liver wind on this basis, and formulated the treatment of dizziness accordingly. The principle of pacifying the liver and submerging the yang to subdue the liver and quench the wind was formulated accordingly. In Su Wen Qi Jia Chang Da Lun (The Great Treatise on Qi Interaction), there is a statement that “when the wood of the year is too much, the wind becomes prevalent, the spleen and earth are subjected to evil, and the people suffer from veneral discharge, which leads to dizziness and topical illness.” In the “Heavenly and Human Correspondence”, the Qi of the wood of the year is too much, and the liver qi is more vigorous in the human body, and the person shows unpredictable emotions, easily gets angry, and dizziness is easily committed to the head. It is also said in the Suwen – Six Elements of Zhengji Daxue that “when the wood is depressed, even the ears are ringing, the eyes are dizzy, the eyes do not know people, and the head is stiff.” It is also said that the wind energy of the sky is too much, which will cause the liver energy in the human body to flourish, thus causing dizziness. 3. Lower real upper deficiency: “Su Wen – Five Organs Generating Chapter” has “favoritism, deafness of the eyes, lower real upper deficiency, over in the foot Shaoyang sympathetic Yin, even the liver”. Wang Bing note: “favor, disease also; Meng, unknown also. The eye is violently ill and unknown. The word “you” means to shake off the uncertainty. You, very also.” The description of this passage is very similar to the clinical manifestation of transient cerebral ischemic attack, which has the pathogenesis of “lower actual and upper deficiency”, and the onset of the disease is in the foot Shaoyang gallbladder and the foot Jurgyin liver. Dizziness can be seen in most cases of liver and gallbladder dysfunction, such as dizziness and swelling and pain due to inflammation of liver fire, dizziness due to depression and anger when liver depression is not relieved for a long time, dizziness due to deficiency of liver blood and liver yin, dizziness due to hyperactivity of liver yang and wind yang disturbance, dizziness due to bile and phlegm disturbance, and restlessness due to dizziness. Therefore, when treating these types of symptoms, it is important to take into account the root cause when removing the root cause, so that both the root cause and the symptoms can be treated. In conclusion, most of the symptoms of vertigo are deficiency symptoms, which are related to liver, and most of them present the symptoms of upper solidity and lower deficiency. The viewpoints discussed in the Neijing have become the basic rules for the treatment of dizziness in later generations and have effectively guided the clinical practice, and the later Zhang Zhongjing, Zhu Danxi and Zhang Jinyue also based their views on the Neijing. We should continue to study the Nei Jing and appreciate its reasoning to truly grasp the pulse of Chinese medicine from the source.