According to the classification of five elements:

Jin people, natives, fire people, wooden people and water people.

Second, according to the physical form:

1 Yin-dirty person: the body is short and fat, the neck is short and thick, the shoulders are wide and the chest is thick, the body leans back, people like heat and hate cold, and there are many stools, indicating that the yang is weak and the yin is abundant, and it is easy to stop the yin and cause cold and cold and dampness.

2. Yang-dirty people: they are characterized by slender body, long head and thin neck, narrow shoulders and flat chest, leaning forward, liking cold and hating heat, dry stool, hyperactivity of yang due to yin deficiency, easily changing from yang to heat, and damaging yin and body fluid.

3 Pingzang people: between the two, the body is moderate, reflecting the balance of yin and yang and the harmony of qi and blood.

There are eleven types of the three commonly used classifications:

1 Normal constitution: moist complexion, rosy lips, full of energy, good diet and sleep, normal defecation, red tongue and rapid pulse. Less illness, strong resistance, cold and heat resistance, no tonic, no diet or mild tonic.

Yin-cold constitution: it belongs to cold (solid) nature, usually with cold limbs and no sweat, warm and cold, frequent abdominal pain and diarrhea, joint pain, pale mouth but not thirst, long and light tongue, white fur and tight or heavy pulse. Suffering from rheumatic joint pain, feeling cold pathogen, afraid of cold and wet climate, it is appropriate to warm yang and dispel cold. Should eat warm food, such as mutton, ginger, cinnamon and so on.

3 Yang deficiency constitution: it belongs to deficiency-cold constitution. My limbs are not warm, I am afraid of cold and like warm, I am tired, I like to eat hot food, I sleep too much, my stool is loose, my urine is long, my tongue is fat and tender with teeth marks, my fur is moist, and my pulse is weak. Diseases are mostly caused by cold, and are prone to phlegm, swelling, diarrhea and impotence. And vulnerable to cold and dampness. Resistant to summer but not winter, it is advisable to use products that warm yang and tonify deficiency.

Yin deficiency constitution: it belongs to deficiency-heat constitution, with emaciation, red cheeks, fever in hands and feet, especially in the afternoon, dry mouth, dry throat, dry eyes, dizziness and tinnitus, poor sleep, dry stool, less red tongue coating and dry pulse. It is suitable for yin deficiency and excessive heat, fearing heat and evil, and resisting winter and summer. It is advisable to nourish yin and tonify deficiency, sweet and cold and reduce fever. Such as lily, medlar, Ophiopogon japonicus, sea cucumber, American ginseng and so on.

5 yang heat constitution: excess heat type. Red complexion, fear of cold and heat, polydipsia and sweating, liking cold food, prone to high fever, Huang Chi in urine, constipation, red tongue with yellow fur and strong pulse. Diseases are mostly caused by heat, and they are prone to sores and carbuncles, afraid of heat and resistant to winter and summer. It is advisable to eat bitter and heat-clearing foods or drinks, such as bitter gourd, kudingcha and lotus plumule.

6. Qi deficiency constitution: it is a constitution with deficiency syndrome, with pale complexion, shortness of breath, laziness, easy sweating, less food, easy fatigue, red tongue, fat tongue and slow pulse. It is easy to catch a cold, and it will not heal after illness, and the viscera will droop, and it is intolerant of wind, cold and summer evils. It is advisable to eat yam, lotus seeds or Radix Pseudostellariae, Radix Astragali, Rhizoma Polygonati, etc.

Constitution of blood deficiency: sallow or pale complexion, dull lips, dizziness, palpitation, insomnia and forgetfulness, or numbness of limbs, pale tongue and weak pulse. It is advisable to invigorate qi and produce blood. Use Angelica sinensis, Radix Rehmanniae Preparata and longan pulp.

Constitution of blood stasis: dull complexion, dark or purple lips, dark eyes, nail dislocation, or abdominal pain, tingling, constant pain, dark purple tongue, blood stasis, thin and astringent pulse or irregular pulse number. It is prone to bleeding, abdominal mass, stroke, chest pain (coronary heart disease) and other diseases. It is advisable to promote blood circulation and remove blood stasis, and use camellia and Ren Tao.

Phlegm-dampness constitution: fat belly, greasy facial skin, excessive and sticky sweat, slightly floating eye cells, tight and swollen chest, heavy and sleepy body, fond of eating fat and sticky things, loose stool, fat tongue with many teeth marks, white and greasy fur, and slippery pulse. It is easy to suffer from diabetes, stroke (cerebrovascular accident), chest pain and other diseases. Poor adaptability to wet environment and rainy season. It is advisable to eliminate dampness and phlegm. Suitable for coix seed, poria cocos, adzuki bean, winter melon skin, lotus leaf, lotus stalk, etc.

10 damp heat constitution: greasy face, prone to acne, weight, lethargy, uncomfortable stool, wet scrotum in male, yellow in female, yellow and greasy tongue coating, and slippery pulse. It is prone to acne, jaundice, gonorrhea, fever and other diseases. It is difficult to adapt to the hot, humid and steamy climate. Dietotherapy is the same as phlegm-dampness constitution, and spicy food is not allowed.

1 1 Qi stagnation: depression, fullness in the chest and hypochondrium, walking pain, hyperventilation, belching and hiccups, foreign body sensation in the pharynx, or breast pain and dysmenorrhea. It is easy to suffer from depression, dirty impatience, insomnia, plum blossom, panic and other diseases. The adaptability to mental stimulation is poor, so it is necessary to adjust the mentality and take products that promote qi, such as roses, bergamot and radish. Not suitable for tonic.