The symptoms of mute throat and cough in the late stage of cold and flu are generally related to acute pharyngolaryngitis induced by cold and flu, and common treatments such as general treatment and medication. 1. General treatment: It is recommended that patients rest more, avoid talking as much as possible, and drink more water. And should also eat a light diet, eat more fresh fruits and vegetables, moderate exercise, etc., can promote the healing of patients. 2. Medication: Under the guidance of the doctor, use drugs such as Shuanghuanglian Oral Liquid and Yicheng Capsule to alleviate the symptoms of mute voice. The use of cough expectorant drugs such as Ambroxol or Pei Pa Koa Cream. Secondly, antiviral granules can be taken for the causes of colds such as viral infections. For the symptoms of muffled voice and cough in the late stage of cold, it is recommended that the patient consult a doctor in time and standardize the treatment.