The principle of diet after renal puncture is based on light and easy to digest, the following specific analysis, renal puncture is an important method of modern clinical diagnosis and treatment of glomerulonephritis, renal puncture is a diagnostic procedure in which the patient is guided by ultrasound to take out a small amount of renal tissue to give a smear, and then carry out immunofluorescence, light microscopy, electron microscopy and other tests, and it has important significance for perfecting the pathology of glomerulonephritis, and formulating the therapeutic plan and judging the prognosis. The main complications of renal puncture are The main complication of renal puncture is blood in urine, and hematoma or hemorrhage can occur in serious cases, so patients should rest in bed, drink more water and urinate more after renal puncture. When resting in bed, patients are prone to weakening of gastrointestinal function and symptoms such as dry stools, so the diet should be light and easy to digest, consume more fresh vegetables and fruits, and avoid spicy and stimulating and sweet foods, so as not to aggravate the burden on the gastrointestinal tract of the patients and to prevent nausea, vomiting, abdominal pain, constipation and other symptoms.