Yin deficiency internal heat, i.e. Yin deficiency fever, is the name of a disease that usually manifests itself in symptoms such as heat in the palms of the hands, bitter and dry mouth, and yellowish urine. Yin deficiency fever refers to the deficiency of yin essence caused by various reasons, and when yin is weak, yang is strong, and water does not control fire and fever occurs. Clinically, it is mainly manifested by afternoon hot flashes (a burst of heat), nighttime fever, and hand, foot, and heart fever, and accompanied by symptoms such as irritability and night sweating (abnormal sweating after falling asleep, and sweating stops after waking up). This evidence clinically to nourish yin and clear heat (nourish yin essence, remove heat evil) as the basic treatment principle, can be under the guidance of the physician to take Zhibai Di Huang Pill, Dazhongyin Pill, Heche Dazhuang Pill and other drugs for treatment. Attention to allergy to the drug is prohibited, allergic people with caution. If the patient has the above symptoms, it is recommended that the hospital, under the guidance of the physician standardized treatment, do not blindly use their own medication, so as not to cause adverse reactions.