Dry and rough tongue coating generally suggests that the body’s fluid has been injured, mainly manifested as dry tongue coating, parched without fluid, or even tongue coating dry cracks. Dry and rough tongue is seen in sweating, vomiting and diarrhea, or overdose of warm and dry drugs, resulting in insufficient fluid in the body, the tongue is not moistened and is dry, or due to phlegm (water metabolism disorders in the formation of pathological products), blood stasis, yang qi is curbed, fluid transmission obstacles can not be up to the tongue surface and see dry moss. Tongue moss refers to a layer of moss scattered on the tongue surface, formed by the stomach qi upward fumigation of the stomach grain qi, food turbidity, cohesion on the tongue surface. Normal tongue moss, generally thin white uniform, the middle and root of the tongue surface is slightly thick, and the tongue moss mainly reflects the body’s fluid surplus and deficit and the transmission and distribution of the situation. If the symptoms of dry and rough tongue, do not take medication without authorization, please consult a doctor in a timely manner, under the guidance of a professional doctor to regulate.