There are mainly physiological and pathological factors for vomiting after drinking compound polyethylene glycol electrolyte dispersion, among which the pathological factors mainly include gastric retention and intestinal obstruction, which require prompt identification of the cause and targeted treatment. It is recommended that after taking compound polyethylene glycol electrolyte dispersion, you should not rest flat on your back immediately, and you can walk appropriately to promote gastrointestinal peristalsis, so as to reduce the situation of vomiting to a certain extent. Physiological factors: Some people may not accept the taste of polyethylene glycol electrolyte dispersion and may have a feeling of resistance, which may lead to the feeling of vomiting. In this case, no special treatment is needed. Adding some sugar to neutralize the bitterness of the drug can reduce the discomfort during the process of taking the drug. Pathological factors: 1. Gastric retention: compound polyethylene glycol electrolyte dispersion belongs to a kind of laxative drug commonly used in clinical practice, which is widely used in preoperative intestinal preparation and induction of diarrhea before colonoscopy. The amount of compound polyethylene glycol electrolyte dispersion required for preoperative intestinal preparation for intestinal surgery is generally high. Some patients with a lean body type or poor nutritional status may suffer from acute gastric dilatation in the process of taking it, so a feeling of vomiting may occur. If the vomiting is serious, you can use lactulose and other laxative drugs to relieve it under the guidance of a doctor. 2. Intestinal obstruction: When there is intestinal obstruction, the intestinal contents cannot pass through smoothly, resulting in reflux of the compound polyethylene glycol electrolyte dispersion, which causes the feeling of vomiting. In this case, abdominal plain film and other related examinations should be performed, and after the diagnosis is clear, related treatments such as fasting and gastrointestinal decompression should be carried out. If there is also abdominal pain, abdominal distension and other discomfort, the root cause of the disease can be removed by cutting and separating the adhesion band.