Frequent throat clearing in the morning may be caused by diseases such as pharyngitis, bronchitis and post-nasal drip syndrome. 1. Pharyngitis: mostly caused by pathogens such as coxsackie virus, adenovirus, parainfluenza virus, streptococcus, etc. Patients may have symptoms such as burning sensation in the pharynx and itching in the throat. When the inflammation continues to cause irritation to the pharynx, it may lead to an increase in the patient’s throat secretions and frequent throat clearing in the morning. 2. Bronchitis: Long-term exposure to dust and frequent smoking may induce bronchitis, leading to increased sputum secretion in patients. As the patient expels more phlegm in the early morning, the symptom of frequent throat clearing may occur after waking up in the morning. The patient may be accompanied by symptoms such as cough and shortness of breath. 3. Postnasal drip syndrome: Chronic sinusitis, nasal polyps and other diseases may trigger postnasal drip syndrome, causing the patient’s nasal secretions to increase. If the nasal secretion flows to the throat after waking up in the morning, it will easily lead to frequent throat clearing in the morning; it may also be accompanied by symptoms such as runny nose and nasal congestion. It is recommended that patients who frequently clear their throats early in the morning go to the hospital for medical treatment, and standardize the treatment after clarifying the cause of the disease to find the cause of the disease and go to the hospital for treatment as soon as possible.