The causes of nausea are physiological and pathological. Physiological causes include overeating, early pregnancy reaction, etc. Pathological causes include dyspepsia, gastroesophageal reflux and chronic pharyngitis. 1. Physiological causes: such as eating too much food, especially greasy food, leading to increased digestive burden; women of childbearing age with a history of sexual life and menopause need to consider early pregnancy reaction. 2. Pathological causes: such as dyspepsia can also have loss of appetite, bloating and other symptoms; such as gastroesophageal reflux can also have acid reflux, retrosternal pain and other symptoms; such as chronic pharyngitis can also have pharyngeal discomfort, cough and other symptoms. Always want to vomit nausea, there are many other reasons, for always want to vomit nausea, it is recommended to consult a doctor to clarify the specific reasons.