Yin and yang deficiency refers to the deficiency of both yin and yang in the internal organs, or the deficiency of both qi and blood, or the deficiency of both yin and yang in the kidney. Different types of evidence have different clinical manifestations, such as kidney yin and yang deficiency symptoms are afraid of cold, limbs are not warm, hands, feet and heart heat. Clinical symptoms of kidney yin and yang deficiency include fear of cold, lack of warmth in the limbs, heat in the hands, feet and heart, dizziness, tinnitus, lumbar and knee soreness, spermatorrhea, impotence, and a thin and weak ulnar pulse. Clinical symptoms of qi and blood deficiency mainly include poor spirit, fatigue, chest tightness and shortness of breath, lack of strength to speak, dizziness, heartburn, insomnia, and so on. It is recommended to seek timely medical treatment for the above symptoms.