Patients with nephrotic syndrome, because a large amount of protein is lost from the urine, manifest as hypoalbuminemia, gastrointestinal mucosa edema is obvious, may be accompanied by pleural effusion, peritoneal effusion, thus affecting digestion and absorption. Therefore, an easy-to-digest, light, semi-liquid-based diet should be chosen. In case of severe edema, sodium intake should be restricted to 2-3 grams per day, while in case of mild edema, strict control may not be necessary. Regarding protein intake, it is recommended to apply high quality protein, i.e. animal protein rich in essential amino acids, such as chicken, fish, meat, egg and milk, with a daily intake of 1 g/per kg body weight. In severe nephrotic syndrome, such as albumin less than 20 g/l and 24h urine protein quantification greater than 10 g, a high protein diet with daily intake of 1.0-1.3 g/per kg body weight can be given for a short period of time. However, patients with abnormal renal function should be given a low-protein diet with an intake of 0.6-0.8 g/per kg body weight per day, which can be accompanied by oral administration of alfadroxil, which can avoid malnutrition.