After percutaneous nephrolithotomy, you usually need to be absolutely bedridden for about 3 days, and the exact time varies from person to person. Percutaneous nephrolithotomy is a minimally invasive surgical procedure for urinary stones, in which stones are crushed and removed through minimally invasive instruments such as nephrolithoscopes. Absolute bed rest is required for about 3 days after surgery, mainly to reduce bleeding within the kidney tissue. During the operation, an intrarenal drainage tube will be placed, and the drainage fluid will be bloody in the early postoperative period. When the bleeding in the kidney stops, the color of the drainage fluid will slowly turn yellow, and after the condition stabilizes, you can turn over in bed or consider walking on the floor. It should be noted that the drainage tube should be protected during the turning or walking process to avoid the drainage tube from detaching from the kidney. It is important to drink plenty of water after surgery to dilute the urine and drain the bleeding from the kidney to prevent blood clots from blocking the drains. In addition, avoid strenuous exercise after surgery, pay attention to regular review and carry out appropriate activities under the guidance of your doctor according to your recovery condition.