Thick and white tongue coating with cracks in the middle and teeth marks on the side of the tongue are usually seen in patients with weak spleen and stomach and phlegm-dampness, which can be treated with medication and supplemented with dietary therapy. Medications can be used such as Six Gentlemen Pill, Ginseng Ling Bai Zhu San, Er Chen Pill, and so on, and medications such as yam, white lentil, Poria, Coix Seed and other medications to strengthen the spleen and dry dampness (strengthen the spleen and get rid of dampness) can be consumed more often. Liu Jun Zi Pill is mainly used for treating spleen deficiency with phlegm-dampness syndrome, patients can see white greasy moss, tongue with teeth marks, and also chest tightness, nausea, loss of appetite, abdominal distension and other symptoms. Ginseng Ling Bai Zhu San is mainly used for treating spleen deficiency with dampness, patients can see white and thick tongue coating, teeth marks on the side, weak and slow pulse, loss of appetite, indigestible food in the diet, fatigue, diarrhea, emaciation and other symptoms. Er Chen Wan is mainly used to treat phlegm-dampness syndrome, patients can see white and thick tongue coating, teeth marks on the side, cough, phlegm, white phlegm, chest tightness, heavy limbs (limb weakness, heaviness) and other symptoms. If there is any discomfort, you should seek medical advice, and the drug should be taken under the guidance of a physician.