The first reason for coughing, dry heaving and vomiting is that there may be inflammation of the respiratory tract, especially in the throat. If inflammation occurs in the throat, congestion and edema will occur, which will cause irritation to the throat and lead to coughing. In addition, the throat is a channel for the digestive system and can cause digestive symptoms such as dryness and vomiting. In addition, coughing will cause the pressure in the chest cavity to rise, which will in turn cause the pressure in the abdominal cavity to increase. Once the pressure in the abdominal cavity increases, it will compress the stomach and cause symptoms of dry heaving and desire to vomit. At this time, it is necessary to treat the cough with medication to relieve the cough, for example, you can use aminoglutethimide oral solution and compound licorice combination. If the dry cough is more serious, you can also take fenagin cough syrup to relieve the symptoms of coughing, dry heaving and wanting to vomit.