The itchy throat with phlegm that cannot be spit out may be related to chronic pharyngitis, acute bronchitis, colds and other causes. 1. Chronic pharyngitis: due to the stimulation of inflammation or lymphoid follicle hyperplasia in the posterior wall of the pharynx, the throat may feel abnormal, and there may be phlegm, but can’t cough up the phenomenon. 2. Acute bronchitis: when acute bronchitis occurs when infected with bacteria, itchy throat, coughing, phlegm sticky and not easy to cough out the symptoms. 3. Colds: When infected with viruses, symptoms such as throat discomfort, coughing, coughing up phlegm, and coughing up phlegm may also occur. It is recommended that those who have itchy throat and spit up sputum go to a regular hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.