There are many different reasons for coughing and vomiting: 1. It may be caused by an infection, such as a violent cough that causes regurgitation and vomiting, which should be actively treated with cough suppressant therapy. 2. It may also be an allergic reaction, if the allergen has not been effectively removed, it can also lead to coughing symptoms and no relief, which can also cause serious symptoms. 3. It may be a disease of the digestive system, such as acute and chronic bronchitis, reflux esophagitis, or it may be caused by a stomach ulcer. In this case, you should go to the hospital for pulmonary function tests, routine blood tests, and electronic gastroscopy. Only after the condition is determined can we obtain targeted treatment to effectively control the condition. During the treatment period, we should pay attention to a light diet and should not choose high-fat foods.