Liver, heart, spleen, lungs and kidneys correspond to the five elements, namely wood, fire, earth, gold and water. Chinese medicine says that the five organs correspond to the five elements, mainly through the image of things to find out the characteristic signs that can reflect its essence, and make analogies to determine its five elements. 1. Liver corresponds to wood, such as wood has the characteristics of growth, development, smoothness, and organization, and the liver likes organization and hates depression, has the function of dredging qi and blood, and regulating emotions, so the liver belongs to wood. 2. The heart corresponds to fire, such as fire has the characteristics of heat, rising, brightness, etc., while the heart is the main blood vessel, hides the spirit, is a yang organ, the fire organ, the main bright, has the characteristics of warmth and brightness, so the heart belongs to the fire. 3. Spleen is earthy in nature, such as earth has the properties of sowing and harvesting, while spleen has the properties of biochemistry and carrying, so the spleen is earthy. 4. Lung corresponds to gold, such as gold has the nature of change such as rigidity and flexibility, purging and killing, sinking, etc., while the lung has the characteristics of propagation and purging, so the lung belongs to gold. 5. Kidney corresponds to water, such as water, moist, downward characteristics, and the kidney is the master of water and essence, with nourishing, closed nature, so the kidney is water. The application of the five elements doctrine in Chinese medicine clinic, need to be under the guidance of professional doctors, not blindly self-identification, so as not to cause adverse consequences.