The yellow and thick tongue coating is caused by heat in the body, you can take Huanglian Shangqing Tablets. Huanglian Shangqing Tablet has the efficacy of dispersing wind-heat and clearing heat, diarrhea fire and pain relief. It is used for dizziness and dizziness caused by wind-heat attacking the lungs and stomach (the heat of the lungs and stomach is very heavy), outbreaks of fire eyes (i.e., infectious conjunctivitis, also known as red-eye), tooth pain, mouth and tongue sores, sore throat, earache and tinnitus, constipation, short and red urination (small amount of urination, dark yellow color). Do not use Huanglian Shangqing Tablet for patients with deficiency and coldness of the spleen and stomach (spleen and stomach weak and cold) and pregnant women to avoid adverse reactions; use with caution in allergic conditions. Do not take warm tonic Chinese medicines while taking the medicine. There are many reasons for yellow tongue coating, if the symptoms cannot be improved after taking the medicine, it is recommended to consult a doctor in time and use the medicine under the guidance of the doctor’s diagnosis and treatment.