A throat that is not sore but always has white phlegm may be related to chronic pharyngitis, chronic rhinitis or sinusitis, chronic bronchitis and other causes. 1. Chronic pharyngitis: chronic inflammatory reaction of the pharyngeal mucosa, submucosa and lymphatic tissues can cause a large increase in pharyngeal secretions, and there is always white phlegm in the throat. 2. Chronic rhinitis or sinusitis: due to the stimulating effect of inflammatory factors, it can lead to an increase in nasal secretion, which can be manifested as always white phlegm when the secretion flows back into the pharynx. 3. Chronic bronchitis: due to bacterial and other pathogenic infections, causing bronchial mucosal congestion, swelling, increased secretion, which can lead to always have white phlegm in the throat. There are other possibilities for those who have white phlegm in the throat, so we recommend that you seek medical attention in time and standardize your treatment under the guidance of your doctor to avoid delays in your condition.