The medicine used in Tongluo Drink is Gui Zhi, Fang Feng, Chuanxiong, Angelica sinensis, Bai Zhu, Bai Shao, Tian Ma, Chicken Blood Vine, Mulberry Branch, Centipede, Danshen, Pueraria Mirifica, Chrysanthemum, Xian Ling Spleen and Sheng Gan Cao. In this formula, Gui Zhi is an upper limb inducer and warms the meridians and channels the channels; Ge Ge Gen is an antiseptic and pain reliever and can induce the medicine to go upstream to the disease; Tian Ma calms the liver and stops dizziness by pacifying phlegm; Chrysanthemum calms liver yang; Danshen, Chuanxiong, Angelica, and Red Peony invigorate blood circulation and resolve blood stasis; Chicken Blood Vine moves blood, tonifies blood, relaxes tendons and activates the channels; Fang Feng wins dampness and relieves pain; Centipede relieves spasm and channels the channels to relieve pain; Xian Ling Spleen tonifies the kidney and strengthens the heart, strengthens yang and promotes paralysis; and Licorice harmonizes all the medicines. The whole formula activates blood circulation, dispels wind and relieves pain. Vertebral artery type cervical spondylosis belongs to the category of “cervical paralysis” and “vertigo” in Chinese medicine. The liver is the main organ of drainage and circulation, the liver wood is not nourished, the qi is depressed, the flow of qi and blood and fluids is not smooth, the phlegm becomes phlegm, the phlegm stops in the upper jiao, the congestion of the yang position, blocking the qi, the phlegm and qi are knotted, the qi is stagnant, the blood is stagnant, the phlegm is stagnant, the phlegm is stagnant, the deficiency is mixed with the reality, the brain is not nourished and the disease develops. Studies have shown that the peak velocity of vertebral artery blood flow in patients with vertebral artery cervical spondylosis is slower than normal, which is closely related to the fact that the internal diameter of blood flow is smaller than normal. Therefore, the improvement of clinical symptoms is positively correlated with changes in blood flow velocity, internal diameter and blood flow. Tongluo drink can improve the blood flow velocity, internal diameter and blood flow of vertebrobasilar artery, thus relieving and eliminating symptoms.