Thick and white tongue coating after catching a cold may be caused by feeling summer dampness or previous dampness and external evils. Specific medication should be prescribed by a medical doctor, and commonly used medicines include Elshotztzltzsan, Huo Xiang Zheng Qi San, etc. Elshotztzsan has the effect of dispelling summer heat, relieving the surface and eliminating dampness. Elshotsholtzia powder has the effect of dispelling heatstroke and relieving the surface, resolving dampness and harmonizing the middle (dispelling dampness and harmonizing the spleen and stomach), and is used for the treatment of yin heatstroke, with symptoms such as malignant cold (fear of cold), fever, headache, body pains, absence of sweating, abdominal pain, vomiting and diarrhea, and chest and epigastric constriction (a feeling of fullness in the chest and abdomen), with a white and greasy coating on the tongue. The adverse reactions and contraindications of this formula are not known. Pouli Xiang Zheng Qi San has the efficacy of relieving the exterior of evil qi and eliminating dampness (relieving the exterior of evil qi and eliminating dampness within the body), regulating qi and zhong (regulating the qi of the spleen and stomach to make the functions of the spleen and stomach smooth), and is used in the treatment of the symptoms of exterior wind-cold and internal dampness stagnation (dampness stagnation within the body caused by too much coldness in the diet, etc.). This formula is not suitable for treating vomiting and diarrhea associated with cholera caused by dampness-heat. When discomfort occurs, it is necessary to consult a doctor in time and choose medication under the guidance of physician’s diagnosis, and not to use medication on one’s own, so as to avoid delaying the condition.