Cough with sputum after healing from mild bronchitis may be due to incomplete recovery of the inflammation of the respiratory mucosa. 1. Generally speaking, the course of acute bronchitis requires a certain period of recovery, the systemic symptoms may subside within 4 to 5 days, while the cough may last for several weeks. 2. After the recovery of bronchitis cough cough phlegm, it is recommended to take oral cough medication, such as licorice tablets, dextromethorphan syrup, etc., and daily life to eat a light diet, pay attention to warmth, rest, do not stay up too late, and maintain a good state of mind. But it may also be a combination of other diseases that can lead to cough with phlegm. So after bronchitis cough with phlegm, no need to panic, if a long time without relief, need to consult a doctor to avoid delay in treatment.