Patients presenting with this clinical symptom need to be considered in relation to urinary stones or crystalluria, for example. Urinary tract stones and crystalluria sometimes occur in combination. Crystalluria refers to the presence of a large number of crystals in the urine. Crystals refer to very small urinary tract stones, which may form when there are more crystals and they collect together. Small urinary tract stones or crystals can precipitate in the urine, causing a white sediment to appear in the patient’s urine. When a patient has this condition, it is recommended to go to the hospital to perform relevant tests, such as urological ultrasound, urine routine and urine culture tests to clarify the diagnosis.