The possible causes of white urine in urination: a. Urinary tract infections, such as purulent urethritis, cystitis or pyelonephritis, kidney abscess, etc., can discharge urine containing large amounts of pus. This can be accompanied by white urine and increased flocculent sediment in the urine, accompanied by painful urination, back pain, urinary urgency, abdominal pain, fever and other discomforts. You need to take urine for urine routine, and urine culture test to further confirm the diagnosis, whether there is a urinary tract infection. Second, salt urine, which is easy to appear in winter, is due to the formation of salt crystals due to excessive fullness of salts in the urine. In this case, the urine can be seen to be white in color, and there are usually no symptoms of urinary tract irritation. After the urine is collected and heated, the salts can evaporate and disappear, and a routine urine test is needed to further identify them. Third, celiac disease, with milky white urine, is mostly caused by filariasis. It is caused by the blockage of celiac fluid in the lymphatic vessels, which is excreted from the body via the kidneys and shows whitish urine.