“Red tongue” should refer to “red tongue”, red tongue with teeth marks may suggest that dampness-heat phlegm impurities; if the tongue is congenital teeth marks, red tongue may suggest the existence of heat evidence. 1. Damp-heat and phlegm impregnated: the tongue is red, swollen and full of mouth, with teeth marks on the side, and yellow and greasy tongue coating. Other manifestations are chest tightness, coughing, phlegm viscous and yellowish, gastro-epigastric plumpness (stomach distension and discomfort), nausea (no appetite, reduced food intake), etc. Ginseng and Atractylodis Macrocephalae can be used. 2. Heat evidence: If the tongue has teeth marks in the usual way and there are no other symptoms, it can be considered as congenital teeth marks tongue. The redness of the tongue can be analyzed purely from the redness of the tongue, which can indicate the existence of heat syndrome, including solid heat syndrome and deficiency heat syndrome. Solid heat syndrome, symptoms such as thirst, face red, hot and cold, thirst, dry stools, short and red urine (small amount of urine, dark yellow color), etc., can be used gentian diarrhea liver pill; deficiency heat syndrome, symptoms such as dry mouth and thirst, hands and feet, heart fever, night sweating (sweating abnormally after going to sleep, and waking up sweating stops), etc., can be used Zhi Bai Di Huang Pill. Attention to the tongue for the judgment of the disease to play an auxiliary diagnostic role, if you want to make a clear diagnosis, need to be combined with observation, questioning, smell diagnosis, cut diagnosis of the information to comprehensive analysis. If the tongue is red and there are teeth marks, it is recommended to ask the doctor for a clear diagnosis, and actively treat the disease under the doctor’s guidance, so as not to delay the condition.