Vomiting even after eating or drinking may be caused by acute gastroenteritis, intestinal obstruction, or increased intracranial pressure. It can be relieved by medication, surgery and other methods. 1. Acute gastroenteritis: there can be symptoms of vomiting, may cause the loss of body fluids, can be supplemented through intravenous fluid electrolytes, to maintain the body’s metabolic needs at the same time, but also with the intravenous use of omeprazole, vitamin B6 and other drugs, can play a role in suppressing gastric acid and antiemetic effects. 2. Intestinal obstruction: nausea and vomiting can occur, and there will be no bowel movement and exhaust symptoms, you can use enemas and other methods of treatment, the serious need for early surgical treatment. 3. Increased intracranial pressure: increased intracranial pressure due to various reasons can cause headache, nausea, vomiting, vomit what you eat and other symptoms, acute stage can be static mannitol injection to reduce intracranial pressure, while further examination to confirm the diagnosis of what causes increased intracranial pressure, and actively correspond to the treatment. For example, cerebral hemorrhage or intracranial space occupation can be considered surgical treatment. Vomiting after eating or drinking water may also be a reaction to tumor chemotherapy, or a reaction to pregnancy, etc. It is necessary to consult a doctor in a timely manner for treatment under the guidance of a professional doctor.