There are two types of hematuria: visual hematuria and microscopic hematuria, both of which are indications for medical attention once they occur. There are many causes of hematuria, the most common ones are: tumor, stone and infection. After the occurrence of hematuria, you should go to the outpatient clinic in time to improve the urine routine and ultrasound of kidney, ureter and bladder (add prostate for men) to generally distinguish the cause and source of hematuria, and add other related tests according to the specific situation. When taking urine, always remember that it is mid-stage urine! When doing ultrasound, always remember to hold your urine before doing it!