If there is a crack in the middle of the tongue due to spleen deficiency, it is a cracked tongue, which may be caused by spleen and stomach yin deficiency (insufficient yin in the spleen and stomach) or deficiency of the spleen in qi and blood biochemistry and lack of source, and blood deficiency without moistening, etc., but the specifics need to be determined according to the patient’s condition. Cracked Tongue caused by Yin deficiency of the Spleen and Stomach is also characterized by vague pain and burning discomfort in the stomach and epigastric region, hunger but not appetite for food, heartburn and heat (heat in the hearts of the hands and feet, and self-consciousness of the heart and chest), dry mouth and pharynx, hot flashes (bursts of heat), night sweating (abnormal sweating after going to sleep, and stopping sweating after waking up), and other symptoms. Cracked tongue caused by deficiency of the spleen, lack of source of qi and blood biochemistry, and blood deficiency without moistening, also manifested as pale face, pale lips and nails, dizziness, numbness of the limbs and other symptoms. If the symptoms of spleen deficiency with a crack in the middle of the tongue are not relieved for a long time or accompanied by other discomforts, consult a doctor in time to find out the cause and carry out targeted treatment.