Vomiting in dialysis patients can be seen in the following three situations: First, metabolic acidosis, at this time, we should check the renal function, carbon dioxide binding force is significantly lower than normal, nausea, vomiting and other gastrointestinal discomforts, you can take oral sodium bicarbonate or sodium bicarbonate and other symptomatic treatments, to be the carbon dioxide binding force to return to normal, after the symptoms of vomiting will be relieved. Second, dialysis imbalance syndrome, seen in dialysis irregularity or the first dialysis patients, the body toxin reduction is too fast, due to the role of the craniocerebral barrier cranial brain toxins can not be quickly reduced, may appear cerebral edema, causing nausea, vomiting and other uncomfortable symptoms, can be increased through the frequency of dialysis or the number of times to improve the patient’s general condition. Third, upper gastrointestinal diseases such as gastric ulcer or reflux esophagitis can be diagnosed through gastroscopy.