Impurities in the urine indicate an abnormality in the urine. In this case, it is important to note whether it is crystal urine or phosphate urine, pus urine, celiac disease, etc.. A routine urine test can make a valid determination. If there is crystal urine, it may be that the urine contains a large number of organic salts, or baseless salts, precipitates, and crystals, because the urine is oversaturated with salts, and you need to drink more water. If there is pus urine, it is the presence of white blood cells in the urine, which is caused by inflammation, drink plenty of water and take broad-spectrum antimicrobials. If there is phosphaturia, it is the formation of phosphate precipitation in alkaline urine, which may occur intermittently after a meal or with heavy milk consumption. If it is celiac disease, there is celiac, lymph, or proteinuria in the urine, in this case do a celiac test, and surgery should be performed.