If the tongue is white with dry mouth, if the tongue is reddish, it is mostly wind-heat symptom, if the tongue is dry and thick, it is mostly solid heat injuring the body fluid. Wind-heat symptom is mainly caused by heat, Wei qi is depressed, fever and malignant cold (fear of cold) will occur. As the fever is heavy and the cold is light, it will be accompanied by a dry mouth and a desire to drink water, a white tongue, a red tongue, and a headache due to the disturbance of heat and blood. The patient can be treated with pungent, cool and antidepressant medicines, such as Yin Qiao San (Yin Qiao San) plus subtractions. Acupuncture and moxibustion can also be used to regulate the Da Vertebrae Point, Quchi Point, Hegu Point, and Waiguan Point. When solid heat injures the body fluid, there will be a thick white coating on the tongue and a dry mouth. Most of the cases are caused by stomach heat, mainly because the putrefied (initially digested food, forming surimi) food in the stomach steams in the mouth, and a thick layer of white coating will form on the tongue. It is usually caused by irregular diet, or eating some spicy, greasy, stimulating food or staying up all night leading to fire. You can choose Gastric Heat Clearing Capsule, Huanglian Qingguan Pill, etc. under the guidance of doctor’s diagnosis. If there is any discomfort, you should go to the hospital in time, and under the guidance of the doctor to carry out the relevant treatment.