The cause of dry heaving and nausea in the morning may be chronic pharyngitis, reflux esophagitis, chronic gastritis and so on. 1. Chronic pharyngitis: dry heaving, nausea is one of the main symptoms of chronic pharyngitis patients, in addition to pharyngeal discomfort, pharyngeal congestion and other symptoms. 2. Reflux esophagitis: Reflux esophagitis patients mainly due to the obstruction of the lower esophageal sphincter leading to the upward reflux of gastric contents, which stimulates the pharynx, resulting in dry heaving, nausea and other symptoms. 3. Chronic gastritis: patients with chronic gastritis may experience symptoms such as stomach fullness and acid reflux, which may cause dry heaving and nausea. There are many other reasons for dry heaving and nausea in the morning, such as pregnancy, etc. If the above symptoms are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner, to identify the cause and then give targeted treatment.