At present, patients who need to do renal puncture, including chronic kidney disease and patients who can not specify the type of renal pathology. It is a common problem for patients to have difficulty in urination after renal puncture, how to instruct patients to urinate as soon as possible: i. After renal puncture, patients need to be absolutely bedridden for 24 hours, patients are not allowed to do strenuous exercise, not allowed to get down to the bed for exercise, and they need to be absolutely bedridden, so as to avoid hematomas and hemorrhages under the renal periosteum. ii. Inform the patients that before doing renal puncture, the patients need to be trained in bed for urination movement, and try to urinate in bed. Second, if the patient is really unable to urinate in bed, you can also tell the patient after renal puncture that he/she should be assisted by family members to urinate by the side of the bed, and not to perform strenuous exercise. You can observe whether the patient’s urine has a red color, if not, the effect will not be too big.