Nausea after breakfast may be related to early female pregnancy or gastrointestinal diseases, common situations and related recommendations are as follows: 1, pregnancy: If a woman of childbearing age has morning sickness and vomiting symptoms, it is necessary to determine whether it is related to pregnancy according to the time of menstruation, which can be diagnosed differently through pregnancy test sticks, pregnancy test paper or by going to the hospital for blood sampling to check HCG values and ultrasound examination, generally in the 12th week of pregnancy can 2, unclean diet: if you eat breakfast is spoiled, contaminated with bacteria, containing gutter oil, etc., may trigger the occurrence of acute gastroenteritis, the patient will appear nausea and vomiting, usually accompanied by diarrhea, abdominal pain, fever performance; 3, chronic gastritis: inflammation stimulates the gastric mucosa leading to gastric power, food accumulation after eating can cause symptoms of nausea, can be in the doctor Under the guidance of the doctor, use drugs that inhibit gastric acid secretion, gastric mucosal protective agents, and promote gastrointestinal motility, such as cimetidine, omeprazole, domperidone, thioglycollate, etc. In addition, the weather, mood, environment and other reasons can also affect the appetite, causing nausea after meals, appropriate adjustment of lifestyle can be, if the discomfort continues to be unrelieved can seek medical examination, for the cause of treatment.