Vomiting out food residue after meals may be caused by physiological factors such as improper diet, or by gastrointestinal pathologic factors such as gastroesophageal reflux, dyspepsia and gastroenteritis. 1. Physiological factors: If the patient eats a lot of greasy food that is difficult to digest, or overeating, it will increase the burden on the gastrointestinal tract, so that the food can not be digested in a timely manner, and there may be a case of vomiting food residue after meals. If the patient eats a lot of cold, spicy and spicy food, it will stimulate the gastrointestinal tract, resulting in gastrointestinal peristaltic dysfunction, which may also lead to vomiting of food residue after meals. In addition, pregnant women should also consider the possibility of pregnancy if they have sexual intercourse and have symptoms of vomiting food residue after meals. 2. Pathological factors: some gastrointestinal diseases, such as gastroesophageal reflux, dyspepsia, gastroenteritis, peptic ulcer, gastrointestinal tumors and other diseases, will affect the normal digestion and absorption of the gastrointestinal tract and peristalsis, so that the food in the gastrointestinal tract can not be completely and timely digested, resulting in the patient to vomit food residue after meals. Vomiting after meals does not have a clear pointing, if the patient long-term or repeated presence of vomiting food residue after meals, it is recommended to seek medical attention in a timely manner, and actively undergo treatment, so as not to delay the condition.