The common physiological characteristics of the five viscera is to generate and store essence, the common physiological characteristics of the six viscera is to receive and pass the water and grain. Different organs have different physiological functions. 1. Five viscera (1) heart: the main blood (heart qi to promote and regulate the operation of blood in the veins); the main hidden God (the heart has the role of the whole body physiological and spiritual activities). (2) Lungs: the main qi for respiration (the place of gas exchange, with a role in the generation and operation of qi); the main line of water (regulating the transportation of water and liquids throughout the body); the direction of the hundred veins, and the main joints (the blood of the whole body flows through the lungs via the hundred veins). (3) Spleen: main transporting (transporting food and water); main regulating blood (regulating the normal flow of blood in the veins without overflowing out of the veins). (4) Liver: main drainage (draining and regulating the qi of the whole body); main blood storage (storing blood, regulating blood volume, and preventing bleeding). (5) Kidneys: the essence, the main growth and reproduction; the main water (regulating the metabolism of water and fluid throughout the body); the main gas (to maintain the depth of breathing, to prevent shallow breathing). 2. Six viscera (1) Gallbladder: storage and excretion of bile; main decision-making. (2) Stomach: the main acceptance (acceptance of containment) Shui Gu (acceptance and containment of dietary water and grain); the main putrefaction (preliminary digestion of food, the formation of food) Shui Gu (the preliminary digestion of food and drink). (3) Small Intestine: the main acceptance of Sheng chemical (will be the further digestion of food and water); the main secretion of clear and turbid (food and water into essence and residue); the small intestine main liquid (absorption of large amounts of fluid). (4) Large Intestine: main transmission of dross (turning food residue into feces); main fluid of the large intestine. (5) Bladder: storage and excretion of urine. (6) San Jiao: dredges waterways; passes all qi (channels through which qi runs up and down).