White sediment inside the urine may suggest that this urine is crystalluria, that is, the content of crystals in the urine is so high that it precipitates out. The causes of crystalluria include drinking too little water, chronic kidney disease, and drug effects. 1. Drinking too little water: If the patient has the bad habit of drinking too little water, it will lead to the decrease of urine volume, the concentration of substances in urine will increase, and some crystal substances will be precipitated in the form of crystals when their concentration exceeds the saturation degree in urine, so there will be white precipitates in urine. 2. Chronic Kidney Disease: Patients with chronic kidney disease may suffer from glomerular or tubular damage, which leads to the high content of some crystalline substances in the urine, which will be precipitated beyond their saturation level. 3. Drug effects: If patients have recently taken sulfonamides such as sulfamethoxazole, sulfadiazine, etc., the symptoms of crystalluria may also appear through urinary metabolism. The above drugs should be used under the guidance of a doctor. There may be other reasons for the white sediment in the urine, it is recommended to go to the regular hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.