Nausea at breakfast can be physiologic or pathologic. If a woman of childbearing age has irregular menstruation, the first thing to consider is whether nausea after eating breakfast is related to pregnancy. Then again, it may be related to the patient’s own poor sleep at night, and the recent emotional work pressure leads to emotional abnormalities, which may also appear nausea after morning meal, which may be a functional change. Organic diseases: 1. To exclude digestive system diseases, such as the presence of Helicobacter pylori infection, peptic ulcer, and diseases of the liver and gallbladder or even pancreas. The patient should also be asked if there are any corresponding approach symptoms such as dyspepsia, anorexia, bloating, jaundice, epigastric pain, and so on. So these conditions should go to the gastroenterology department, by the doctor for gastroenteroscopy or even abdominal CT to assist in the diagnosis and treatment. 2, there are also some diseases other than the digestive system, such as whether the patient has glaucoma, Meniere’s disease, and whether the blood pressure control, as well as cervical vertebrae and the cranial nervous system disease. There will also be corresponding concomitant symptoms, such as visual rotation, tinnitus, dizziness, panic, and even the emergence of the anterior region of the heart, such as the feeling of stuffiness. If nausea at breakfast occurs frequently and cannot be mediated by rest and dietary control, it is important to go to the hospital and have the doctor choose the appropriate examination method based on the symptoms to make a clear diagnosis.