A normal tongue moss is a thin, white, moist layer of moss on the back of the tongue, which is thin, white and evenly spread on the surface of the tongue in a moderately dry and moist manner. The tongue moss generally indicates the strength or weakness of stomach energy. If there is a problem with our physical condition, especially the spleen and stomach, the tongue will change. Thick moss means that you cannot see the tongue through it. When you are sick, your appetite decreases, you eat less, you chew less, your saliva secretion decreases, your tongue does not move, and your tongue becomes thicker. Thick moss indicates the presence of dampness in the body, which is usually referred to as dampness in the body, or stagnant diet, the spleen and stomach can not be well digested, the tongue will become thick; white tongue moss has many causes, not necessarily the manifestation of disease, the appearance of white moss generally indicates that there is water-dampness or phlegm-drink stagnation in the body, such as chest water, ascites patients generally white tongue moss. If the white moss on the tongue is thick, it means that the wind and cold are prevalent or cold and dampness are concentrated in the middle jiao, thick and white and greasy, it means that the middle yang is not invigorated, the stomach and intestines have stagnant food, or dampness and dampness are stagnant inside, and dampness is too heavy. A thick white tongue usually indicates stagnation in the spleen and stomach, poor eating habits leading to dietary stagnation, or a weaker spleen and stomach with heavy dampness. When there is a thick white tongue, it can be regulated by diet, sleep and medication under the guidance of a doctor.