Not being able to eat, regurgitation, nausea and vomiting are mostly seen in indigestion, gastritis, gastric ulcer, early pregnancy reaction. 1. Indigestion: it is generally due to functional indigestion caused by improper diet, such as overeating or eating too much greasy food, which can easily lead to food staying in the gastrointestinal tract for a long time and can not be digested in a timely manner, thus causing related symptoms. 2. Gastritis: is due to a variety of different causes of gastric mucosa and chronic inflammation, and affects the digestive function, often leads to abdominal pain and discomfort, nausea, vomiting, abdominal distension and other symptoms, and will be accompanied by loss of appetite. 3. Gastric ulcer: the causative factors are more, among which Helicobacter pylori infection is common, and it may also be caused by taking non-steroidal anti-inflammatory drugs and other factors, which often lead to stomach pain, loss of appetite, stomach discomfort and other symptoms, and may also be accompanied by vomiting, nausea and other symptoms. 4. Early pregnancy reaction: women in the early stages of pregnancy, because of changes in the body’s hormone levels, estrogen and progesterone levels increase easy to appear a series of early pregnancy reaction, such as nausea, vomiting, dizziness and fatigue, gastrointestinal flatulence and so on. Can not eat food regurgitation nausea want to vomit, there may be caused by other reasons, if the symptoms continue to be unrelieved, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor for targeted treatment.