Yin deficiency is a type of constitution in which the body is deficient in blood, essence and fluids. The main manifestations are: thinness, scorched hair, flushed face, red lips and dry tongue, dry mouth and throat, dizziness, irritability, heat in the hands and feet, intolerance of heat and cold drinks, tinnitus like a cicada, red tongue with little or no moss, and fine pulse. The principle of recuperation is to nourish Yin and clear heat, nourish Yin and lower fire. Honey, spinach, wheat, ganoderma lucidum, bird’s nest, duck meat, pork, pine nuts, white fungus, black beans, blackberry, clam meat, milk, soy milk, sugar cane, banana, pear, tomato, green beans; dietary supplements: turtle, silver fungus, rabbit meat, honey, sesame, pear, egg; bird’s nest, sea cucumber, cordyceps; contraindicated: onion, ginger, garlic, leek, chili and other spicy products. Chinese herbal treatment: Nourish Yin and clear heat, nourish liver and kidney: for lung Yin deficiency with dry cough and little phlegm, hot flashes and night sweats, it is advisable to take Baihe Gujin Tang; for heart Yin deficiency with palpitations and forgetfulness, insomnia and dreaminess, it is advisable to take Tianwang Tonic Heart Pill; for kidney deficiency with back pain, dizziness and tinnitus, spermatorrhea in men and menstruation in women, it is advisable to take Liuwei Dihuang Wan, Zuo Gui Wan and Da Yin Wan; for liver deficiency with rib pain and dimming vision, it is advisable to take Consistent Decoction.