Coughing up white phlegm and itchy throat may be caused by allergic laryngitis, reflux pharyngitis, post-nasal drip syndrome, etc. Patients can be treated with general therapy, medication, nasal irrigation and other symptoms, but there is no such thing as the “fastest” treatment, and it is recommended to standardize treatment under the guidance of a doctor. 1. Allergic laryngitis: after contact with allergens, symptoms such as throat itching, coughing, coughing up white sputum, foreign body sensation in the pharynx occur. Patients can wear masks, avoid contact with allergens, take second-generation antihistamines, such as loratadine tablets, cetirizine hydrochloride tablets and other drugs. 2. Reflux pharyngolaryngitis: gastric contents reflux into the throat, irritating the mucous membrane of the throat, causing itchy throat, foreign body sensation, coughing with white sputum symptoms. Treatment: abstain from eating sweet, sour, spicy and stimulating food, apply acid-suppressing drugs, such as omeprazole, etc.; gastrointestinal power drugs, such as mosapride hydrochloride and other medications. 3. Postnasal drip syndrome: generally nasal secretions back to the throat, resulting in throat itching, coughing white sputum and other symptoms. Patients can carry out nasal rinsing to clean up nasal secretions and promote recovery. Throat with white phlegm throat itch, it is recommended to go to the hospital, clear diagnosis, follow the doctor’s prescription medication standardized treatment.