Feeling dry mouth in the morning when you wake up is not good for your health and is usually a sign of an abnormality in your body. This symptom may be caused by dryness syndrome, oral disorders, pathological diseases. 1.Dry syndrome: This is an autoimmune disease of the body, and it occurs in women under 40 years old. Patients with dry syndrome usually have severe damage to the exocrine glands, as well as salivary glands and lacrimal glands. Usually, dry mouth and dry eyes are the common symptoms of dry syndrome, and some patients will have swollen parotid glands, chronic low fever and weakness. 2.Oral disorders: If the organism has some oral diseases, the common ones are nasal polyp, nasal septum deviation, inferior turbinate hypertrophy, etc. Patients with these symptoms often open their mouths to breathe while sleeping, resulting in dry mouth in the morning. 3, pathological disease: suffering from diabetes, liver disease, local inflammation are prone to dry mouth in the morning. 4, other: if the weather is dry, the patient suffers from a cold causing nasal congestion and other phenomena, also easy to appear in the morning when the phenomenon of dry mouth. It is usually recommended to pay attention to the phenomenon of dry mouth, and it is recommended to take appropriate treatment according to the severity and whether there are other complications.