Getting up in the morning with snotty nose and phlegm may be caused by rhinitis, upper respiratory tract infections, lung infections and so on. 1. Rhinitis, is the most common cause, including allergic rhinitis and chronic rhinitis, due to sleep can not be timely respiratory secretions, then lead to wake up after the self-conscious snot and phlegm is more, is a common symptom of rhinitis. 2. Upper respiratory tract infections, due to viral infections on the mucous membrane of the upper respiratory tract to produce stimulation, resulting in a significant increase in secretions, manifested in the morning after waking up. 3. Lung infections, due to bacterial or viral infections, resulting in damage to the mucous membranes of the trachea and bronchial tubes and a marked increase in secretions, are also common causes. However, the specific causes need to consult a doctor in time, and under the guidance of the doctor to carry out relevant examinations in order to clarify.