Microscopic erythrocytes 1~3 according to the normal reference value of different specimens in order to determine the severity of the specimen, generally need to microscopic erythrocytes in specimens such as feces, urine, prostatitis, cerebrospinal fluid and so on. The normal reference range of microscopic red blood cells in urine, feces, prostate fluid and other specimens are 0~3 cells per high power field of view. While cerebrospinal fluid normally has no red blood cells, the presence of red blood cells may suggest the presence of cerebral hemorrhage and other diseases. Microscopic erythrocytes need to be diagnosed under the guidance of professional doctors, and the reference value of different diseases to determine whether it is high. When the red blood cells of microscopic examination are high, it is necessary to clarify the cause of the disease under the guidance of doctors and actively treat it.