Acute bronchitis is cured, but there is always sputum, may be chronic bronchitis, lung infection and so on, need to resolve sputum and anti-infection and other treatments. Acute bronchitis is cured but there is sputum all the time, the first consideration is that chronic bronchitis may be. The bronchial tubes are affected by chronic inflammation, which stimulates the mucous membranes and leads to an obvious increase in secretions, and then there is always sputum. You can use drugs such as Ambroxol to treat the phlegm. In addition, we can’t rule out the possibility that the patient may have a combined lung infection, so we need to carry out lung X-ray, blood routine, sputum culture and other tests in a timely manner, so as to clarify the specific type of infection, and then use penicillin, cefoperazone and other antibiotics to carry out anti-infective treatment. After infection control, sputum symptoms can be relieved. The specific cause of the disease needs to be clarified after medical examination, and at the same time, the use of drugs in accordance with the doctor’s instructions, not to use prescription drugs on their own.