Acid enters the liver is a theory in Chinese medicine. Taking acidic Chinese herbs or eating acidic food can conserve the liver to a certain extent. Chinese herbs have five flavors, which refer to: sour, bitter, sweet, pungent and salty, and each of the five flavors has a certain selectivity for each of the five organs, which is why there is a saying that sour enters the liver, bitter enters the heart, sweet enters the spleen, pungent enters the lungs and salty enters the kidneys. In Chinese medicine theory, the liver is the main detoxifier and the main blood storer, meaning that liver qi has the function of dredging and unblocking the qi of the whole body, and the liver also has the function of storing blood, regulating blood volume and preventing hemorrhage. It also stores blood, regulates blood volume and prevents bleeding. In other words, the liver regulates emotions, promotes digestion, drains qi, and transfers fluids. Acid enters the liver, as the name suggests, taking acidic herbs or eating acidic food is conducive to the normal functioning of the liver, and to a certain extent, it can help the body’s digestive function, promote emotional stability and energetic and so on. Not everyone is suitable for acid eating, patients with liver problems, it is recommended that under the guidance of a professional doctor, reasonable regulation, do not blindly use medication or dietary supplements to avoid adverse consequences.