Kidney yin deficiency in males is often characterized by the presence of five heart-heat (heat in the hearts of the hands and feet, and self-consciousness of the heart and chest (irritability and sultriness)), hot flashes (a feeling of heat penetrating from the inside of the bones to the outside), night sweating (abnormal sweating after going to sleep, but sweating stops after waking up) and other manifestations, which may vary according to the individual’s differences. Kidney yin deficiency is mostly due to insufficient endowment (inborn constitution and poor functioning), kidney yin deficiency; prolonged illness and fatigue, depletion of kidney yin; old age and weakness, yin loss; lust, indiscretion, yin and essence loss; warmth and heat in the late stage, burning kidney yin; too much warmth and dryness, robbed kidney yin due to. Kidney yin deficiency is characterized by pain in the waist and knees, dizziness, tinnitus, loose teeth, hair loss, men’s virility, spermatorrhea, premature ejaculation, women’s menstruation, or menstrual closure, disintegration (excessive menstruation or dripping), insomnia, forgetfulness, dryness of the mouth and throat, emaciation, zygomatic redness in the afternoon (cheeks, cheekbones, reddish in color), short and yellow urination, a red tongue with little fluids and less moss or moss, and so on. If men have kidney yin deficiency, it is recommended to seek medical treatment in time and under the guidance of doctors for scientific treatment.