Colds can cause dry mouth and tongue, especially when wind-heat evils invade the body. The wind-heat evil enters the body through the mouth, nose, skin and hair, and invades the lungs. The heat evil can hurt the fluids, so the symptoms such as dry mouth, dry throat and so on will appear. In addition to the above symptoms, the wind-heat evil will also cause nasal congestion, yellow pus nasal discharge, sore throat, cough, yellow mucus phlegm, thick phlegm that is not easy to cough out, pale red tongue, thin yellow moss, yellow urine and dry stools, etc. The patient can be treated with Yin Qiao San. The patient can be treated with Yin Qiao San plus subtraction, or Jin Hua Qing Gan Granules, Lian Hua Qing Di Zhu, Heat Inflammation Ning Granules and other medicines that have the effect of dispersing wind-heat and detoxifying the surface. If the dry mouth and tongue are very serious, you can also add drugs to nourish yin, such as north and south saxifrage, dendrobium, raw land, maitong and so on, have the function of nourishing yin and moisturizing dryness.