Patients with nephrotic syndrome experience significant urinary protein, which actually indicates glomerular lesions. If the patient does not have severe renal failure, such symptoms often do not lead to vomiting. If vomiting occurs, it is necessary to identify the cause, whether there is widespread edema, including gastrointestinal edema leading to vomiting, or if there is severe renal failure, even acute renal failure. In these cases, the patient's vomiting may be related to the nephrotic condition. Additionally, some medications used to treat nephrotic syndrome might cause vomiting and should be discontinued. If the vomiting is related to renal conditions, it is crucial to actively treat the primary disease and control nephrotic syndrome. However, if none of the above reasons are applicable, there might be an issue with the gastrointestinal tract itself, requiring consultation in gastroenterology, possibly needing a gastroscopy, and the use of medications to suppress stomach acid and promote gastrointestinal motility. (Please use medications under the guidance of a doctor.)