If there is no obstruction in the gastrointestinal tract, antiemetic drugs can be applied for symptomatic treatment, which can be oral or intramuscular injection of gastroflucan. If you drink little water, you can also get enough fluids intravenously. If there is an obstruction in the gastrointestinal tract, vomiting from drinking water may also occur. In this case, you need to abstain from eating and drinking, and also need gastrointestinal decompression and enema, and you can consider drinking and eating only after the obstruction is relieved or disappeared. If the tumor in the body presses the gastrointestinal tract and causes vomiting, the patient’s physical condition can be considered for anti-tumor treatment, and the vomiting condition may be reduced after the tumor shrinks.