Cracked tongue is mainly suggestive of deficiency of fluid, yin and blood, and the specific pattern should be based on the specific tongue and combined with the symptoms and pulse to comprehensively recognize the evidence, generally there is heat and injury to the yin, yin and blood insufficiency, spleen qi deficiency. Cracked tongue is a kind of tongue shape, which mainly suggests deficiency of fluid, yin and blood. If the tongue is red or reddish-red and has cracks, it is heat and yin; if the tongue is pale white and has cracks, it is yin and blood deficiency; if the tongue is pale white and fat and tender, with teeth marks on the side and cracks, it is spleen qi deficiency, and the fluid does not come on the bearer. The above description of the cracked tongue only indicates that it has such a suggestive role, and does not mean that the situation it suggests is necessarily the current state of the disease. Because even if it is the tongue, its specific tongue texture, tongue coating or tongue shape sometimes suggests that the situation will be contradictory, not to mention the complex relationship between the tongue and the symptoms of the pulse. Therefore, in order to accurately surmise the state of the current disease, that is, accurate identification, it is necessary to combine the tongue, pulse and symptoms to make a comprehensive judgment, that is, the four diagnosis together. If the body appears to be unwell, you should go to the hospital in time, do not take care of it by yourself, so as not to delay the condition.