Cracked tongue can be caused by heat injury or yin deficiency, umeboshi has the efficacy of generating fluid, quenching thirst, can treat heat injury and yin deficiency caused by cracked tongue, but need to be taken under the guidance of a doctor to identify the evidence. Cracked tongue refers to the appearance of various depths and shades of the tongue, different forms of cracks and grooves, mostly due to the deficiency of yin and blood, can not glorify the tongue caused by moisturizing. The red tongue and cracked tongue is heat and injury or yin deficiency; tongue pale white and cracked tongue is blood deficiency is not moist; tongue pale white and fat tender, the edge of the teeth marks and cracked tongue is a deficiency of the spleen and wet immersion; healthy people with cracked tongue generally have tongue moss cover, belongs to the congenital tongue cracks. Wu Mei has the efficacy of generating fluid and quenching thirst, which can treat the cracked tongue caused by heat and yin deficiency. It should be noted that those who have external superficial evils (evils on the surface of the muscles) or internal solid heat stagnation should not take umeboshi. Those who have cracked tongue should go to the hospital and use medicine under the guidance of doctor’s diagnosis.