The prescription for dry cough is not true. There are many causes of dry cough, such as inhalation of irritating gases or foreign objects in the throat, after taking medication, and some diseases such as sinusitis, pharyngitis, pneumonia, tuberculosis, variant asthma, gastroesophageal reflux, lung cancer, aortic aneurysm and so on, which can cause symptoms of dry cough. Treatment should be case-specific, depending on the specific symptoms of dry cough, such as the specific time, triggers, other accompanying symptoms, etc. and test results to determine the cause, according to the doctor’s arrangement to choose the appropriate treatment. The prescription is not applicable to everyone, and there is no specific scientific evidence to support, so it can not be generalized. It is recommended to consult a doctor in time when symptoms occur, and use medication under the doctor’s guidance, and it is not recommended to blindly choose a prescription for treatment, in order to avoid delaying the treatment and worsening the condition instead.