Urine phase contrast microscopy mainly checks the morphology of red blood cells in urine to identify the source of hematuria. The urine phase contrast microscopy report can be used to classify hematuria into homogeneous and polymorphic. Homogeneous hematuria refers to urine erythrocytes with similar morphology and size, uniform distribution of hemoglobin, and peripheral blood erythrocytes similar to erythrocytes due to rupture of blood vessels in the kidney and urinary tract, and thus blood enters the urine. It is commonly associated with pyelonephritis, ureteritis, cystitis, urethritis or stones in the kidneys, ureters and bladder, or kidney tumors. Polymorphic hematuria refers to the low homogeneity of red blood cells, mostly malformed, uneven distribution of hemoglobin within each red blood cell, and red blood cells enter the urine through glomerular filtration. It is commonly seen in diseases such as acute glomerulonephritis and glomerulonephritis. If you need to carry out urine phase contrast microscopy, please consult the hospital in time and standardize the diagnosis and treatment under the guidance of the doctor, so as not to delay the condition.