Whether or not yellow tongue coating can be cured on its own needs to be considered in the context of its cause and the extent of its condition. Yellow tongue coating mostly means that there is heat in the body, while thick and greasy tongue coating mostly means that there is dampness in the body. When yellow tongue coating is caused by dampness and heat in the spleen and stomach, if the symptoms are mild and there are no other manifestations, it can be cured by adjusting dietary preferences. However, if there is bitter mouth, dry throat, heavy limbs or other manifestations, it will not be cured under normal circumstances. If the yellowish-thickness of the tongue is mainly due to accumulation of food, it can be cured when the symptoms are mild, such as when it is only a sign of poor digestive function. However, if abdominal distension, constipation, foul-smelling stools, etc. have appeared, most cases cannot be cured by themselves. When the tongue is thick and yellow, you can try to eat a light diet first and eat easy-to-digest food. If there is no relief after changing the diet, it is recommended to go to the Chinese medicine department of the hospital and have the doctor identify the symptoms and give the corresponding treatment according to the type of symptoms.