There are 1~1.5 million glomeruli on each side of the kidney, and only 10~50 of them are taken out for pathological examination, which is almost harmless to the human body; 2. 4. The doctor has formulated strict indications for “kidney biopsy”, and before the operation, the patient will be trained to adapt to the prone position, breath-holding training and bedside urination, etc. At the same time, the patient will be given psychological counseling to exclude the patient’s anxiety. 5. After the operation, the patient rested in bed and was prohibited from getting out of bed for 24 hours, and was also given treatment such as hemostasis and infection prevention.