The number of clear tubular cells in urine routine is 3, which is not serious. Under normal circumstances, clear tubular cells may or may not be present in urine in small amounts, and the number of 3 is a small amount of presence, which is normal. When the number of clear tubular cells in urine exceeds 20, it is more serious and patients should pay attention to it, suggesting that patients may suffer from glomerulonephritis, renal failure, acute and chronic nephritis and other diseases. It is recommended that patients go to the urology department of regular hospitals in time to improve relevant examinations, such as urine bacterial culture and urinary ultrasound, and actively carry out targeted treatment after clear diagnosis. If patients can undergo regular treatment in time, their condition can be controlled and then completely cured, but if treatment is delayed, it will cause irreparable damage to health.