The throat always have pus sputum but not coughing is usually caused by chronic laryngitis, or rhinitis, sinusitis, respiratory tract infections, but this symptom alone is not enough to diagnose the disease, it is recommended that the patient consult a doctor to find out the cause of the disease in a timely manner. 1. Chronic laryngitis: If it is chronic laryngitis, there is usually a situation where there is always pus and phlegm in the throat but no cough. You need to go to the hospital for examination to determine whether it is due to pharyngeal reflux. 2. Rhinitis, sinusitis: generally speaking, if the postnasal drip is caused by rhinitis, sinusitis, patients will have rhinitis, sinusitis and other nasal symptoms, which will lead to always have pus phlegm in the throat but not coughing symptoms 3. Respiratory tract infection: if the upper respiratory tract is infected by certain bacteria or viruses, then it is also easy to lead to the symptoms of not coughing but sputum. In addition to the above factors, other factors cannot be ruled out. It is recommended that the patient go to the hospital as soon as possible for examination, and the doctor will give targeted treatment after clarifying the cause of the disease.