The itchy throat and cough in the late stage of cold may be caused by acute pharyngitis, allergic cough and tonsillitis. 1. Acute pharyngitis: If bacterial infection occurs late in the cold, it may stimulate the pharynx and induce acute pharyngitis. Patients will have throat itching, cough, throat dryness, chills and fever and other manifestations, leading to the symptoms of itchy throat and coughing in the late stage of cold and flu. 2. Allergic cough: upper respiratory tract infections such as contact with allergens and other substances in the late stage, will lead to irritating dry cough and other symptoms. 3. Tonsillitis: If bacterial infection occurs in the late stage of a cold, acute tonsillitis is easily induced. The patient will have a cough, throat itching and other manifestations, so the patient will appear in the late stage of the cold throat itchy old want to cough performance. Itchy throat and cough can also be caused by other diseases, if the symptoms are not relieved or aggravated, you need to consult a doctor in a timely manner, under the guidance of the doctor to take appropriate measures to treat.