Yellowing of the root of the tongue may be caused by kidney yin deficiency and fire, or bladder dampness and heat, etc. There are more specific causes, so it is recommended to consult a doctor. Yellowing of the tongue caused by kidney yin deficiency and fire is often accompanied by low back pain, tinnitus, hot flashes, zygomatic redness (reddish color of cheeks and cheekbones), night sweating (abnormal sweating after going to sleep, but sweating stops after waking up), five heart-heat (heat in the hearts of the hands and feet, and self-consciousness of the heart and chest heat (irritability and sultriness)), men’s dreams of premature ejaculation, women’s dreams of intercourse or sexual desire, and yellow urine, and other symptoms. Bladder dampness and heat caused by yellowing of the tongue, often accompanied by frequent urination, urinary urgency, burning pain in the urethra, or dysuria, or interrupted urination, yellowish red turbid urine or blood in the urine and other symptoms. If the symptoms of yellowing of the tongue are not relieved for a long time or accompanied by other discomforts, consult a doctor in time to identify the cause and carry out targeted treatment.