A small amount of white sediment in the urine after settling overnight is a normal phenomenon, mainly due to organic metabolites in the urine. In addition, more sediment, or accompanied by other uncomfortable symptoms, you should consider the possibility of pathological factors. 1. Physiological phenomenon: urine contains urate, phosphate, carbonate and other components produced by the body’s metabolism, after a night of precipitation, part of the water in the urine is evaporated, the phenomenon of white sediment can occur. 2. Pathological phenomena: If the white precipitate is large, or the patient is accompanied by urinary pain and other symptoms, we should be alert to the possibility of urinary tract stones and other diseases, which can also cause this symptom. If there are obvious discomfort symptoms, or suspected of pathological factors caused by this disease, should seek medical examination as soon as possible, combined with the cause of treatment.