There are many causes of coughing. Some people have a mild cough that gets better after a few days, but some people always have a bad cough. When there is this problem you should pay attention to it, it may be caused by your lungs, upper airway, or asthma. 1. Lungs. The lungs are our important breathing airways, this place if there is a problem will lead to poor breathing, and even cause a long cough, so when just coughing non-stop, we must pay attention to it, you can go to the hospital to check the lungs. 2. Upper airway. Small diseases in this area are also the root cause of coughing. If a person has rhinitis, his breathing is very sensitive, and he will also cough incessantly at this time. 3. Bronchial tubes. Some people who cough for a long time, or cough and cough and then wheeze, may also be bronchial diseases. This time must not be taken lightly and should go to the hospital for examination and medical treatment under the advice of a doctor. Coughing is a common phenomenon in the human body, but when it persists for a long time, we should pay attention to it and find out the cause and prescribe the right medicine. Generally speaking, the causes of this phenomenon are the above three, if you are also often coughing, you should take a good look at it.