The main consideration is that the cough is caused by infectious diseases of the respiratory system, acute and chronic bronchitis is the most common cause, if there is no coughing, coughing up sputum, just in the morning at 1-3 o’clock also need to be considered due to cough variant asthma caused by a sudden attack at night, you need to go to the hospital to do blood tests, chest X-ray, but also need to do bronchial excitation test and diastolic test, need to be actively treated with bronchodilator drugs. The bronchial provocation test and diastolic test are also needed, and bronchodilator drugs are needed for active treatment. Dry indoor air or respiratory sleep apnea syndrome may also cause it, and it is necessary to go to the hospital to do the appropriate tests to find out the cause. Sleeping in an incorrect position or chronic rhinitis, nasal congestion may also affect sleep, which may affect breathing and cause coughing symptoms.