Improvement of pertussis may be characterized by a decrease in the number of paroxysmal cough attacks, a reduction in the degree of paroxysmal spasmodic cough, or no longer occur. 1. Decrease in the number of paroxysmal coughing episodes: the number of daily episodes of paroxysmal coughing episodes is reduced in patients with improvement of pertussis, from dozens of times a day to a few times a day, a few times a day to once a few days, and so on. 2. Reduced degree: after the improvement of pertussis, the cough is reduced, and the cough does not cause incontinence, redness, cyanosis, etc., or only manifested as occasional dry cough. 3. no longer paroxysmal spasmodic cough: no longer paroxysmal spasmodic cough suggests that whooping cough from the spasmodic cough into the recovery phase, that is, whooping cough into the improvement stage. If you have whooping cough, you need to isolate the patient to avoid infecting others, and need to go to the regular hospital, active treatment, so as not to delay the disease.