The main difference between kidney yang deficiency and kidney yin deficiency lies in the different clinical manifestations and treatment programs. 1. Clinical manifestations: Kidney yang deficiency can be manifested by dizziness, cold and pain in the waist and knees, clear and long urination, diarrhea before dawn, impotence and premature ejaculation in men, and infertility in women with uterine cold. When Kidney Yin is deficient, the clinical manifestations are soreness of the waist and knees, dizziness, tinnitus, heart-heat (heat in the hearts of the hands and feet, and self-consciousness of the heart and chest), night sweating (sweating abnormally after going to sleep, and sweating stops after waking up), insomnia, forgetfulness, dryness of the mouth and throat, and thinness of the body. 2. Treatment plan: Patients with kidney yang deficiency generally adopt the method of warming kidney yang (warming and replenishing kidney yang), and can take Gui Fu Di Huang Wan and Yu Gui Wan under the guidance and advice of the doctor. Patients with kidney yin deficiency generally adopt the method of nourishing yin to replenish the kidneys, and may take Liou Wei Di Huang Wan, Zhi Bai Di Huang Wan and Zuo Gui Wan under the guidance and advice of a doctor. Patients should consult a doctor for diagnosis and treatment in a timely manner, and should not diagnose and take medication on their own to avoid adverse consequences.