The clinical manifestations of pediatric nephritis mainly include increased foam in urine, hematuria of the naked eye, edema of both lower limbs, morning eyelid edema, elevated blood pressure, nausea, vomiting, irritability, crying easily, decreased urine output, etc. If the above symptoms appear, it is recommended to consult a tertiary care hospital to improve urinary routine, 24-hour urine protein quantification, blood routine, liver and kidney function, rheumatologic immune system, urinary red blood cell morphology examination, urologic ultrasound, and if necessary, kidney aspiration biopsy to clarify the kidney pathology, and then give active and reasonable clinical treatment.