If patients experience symptoms such as dizziness and dry mouth, they are mainly considered to be related to heatstroke, cold, hypertension, vertigo and other diseases. Patients should combine their physical conditions and carry out targeted treatment under the guidance of doctors.1. Heatstroke: prolonged high temperature and high humidity environment makes patients have water-electrolyte disorders, and with the increase of body temperature, brain nerve cell dysfunction, and then symptoms such as dizziness and dry mouth appear. At this time, you need to immediately go to a cool place to rest, and hydrate, proper rest, physical cooling if necessary, usually the symptoms can disappear naturally; 2, cold: due to viral invasion of the body, the release of toxins to the nerves caused by stimulation, so that the body appears dizziness, dry mouth and other symptoms. If necessary, antiviral drugs should be taken for treatment under the guidance of a doctor. Patients should drink water regularly and pay attention to rest to promote recovery; 3. Hypertension: Due to the increase of blood pressure, the blood vessels in the brain become spasmodic, which affects the blood supply to the brain, thus leading to dizziness and dry mouth and other symptoms, which should be actively treated with antihypertensive drugs, such as metoprolol and bisoprolol; 4. Vertigo: Due to the lesion of vestibular receptors and extracranial segment of vestibular nerve, patients experience dizziness, which can be accompanied by dry mouth and other symptoms. In addition to this, it can also be accompanied by nausea, vomiting, sweating and other uncomfortable symptoms. In this case, it is necessary to go to the hospital for cranial CT and other examinations to clarify the cause of the disease and then carry out targeted treatment.