When a cough occurs, the water loss through the respiratory tract is relatively large, and the dryness of the respiratory tract mucosa easily occurs, and the phenomenon of dry mouth and dry tongue will appear, which is caused by a more serious cough, and at this time, effective cough relief and phlegm treatment can relieve the phenomenon of dry mouth and dry tongue. For example, you can use Ambrotero Oral Solution, Ambroxol Hydrochloride, Pulmonary Cough Combination, Bulbus Serpentine and Chuanbei Liquid, and Compound Fresh Bamboo Leach Liquid, all of which can be effective in relieving cough and resolving phlegm. It can relieve the cough and can relieve the dryness of the mouth and tongue. In addition, drink more water. Drinking more water can help moisten the airway and relieve the phenomenon of dry mouth. Moistening the airway can also help dilute the phlegm, thus promoting the discharge of phlegm, which is also helpful for relieving cough. Then you can use a nebulizer to nebulize and inhale saline, which can effectively relieve the phenomenon of dryness in the respiratory tract, and has a better effect on relieving cough and dry mouth.