WBC is the acronym for white blood cells, HP is the acronym for high power microscopy, diarrhea pulling dark red blood, microscopic white blood cells WBC20/HP means that the stool in the high power microscopy, each high power microscopy field of view 20 white blood cells. Diarrhea pulling dark red blood microscopic leukocytes WBC20/HP is abnormal, normal stool is usually no red, white blood cells, there are white blood cells suggesting a bacterial infection, considering diarrhea due to bacterial infection, although there is stool dark red, but the microscope did not see the red blood cells, may be related to eating red-colored food. Stool microscopy with white blood cells are, should eat light, easy to digest food, under the guidance of the doctor regular use of medication, and recheck the stool routine and other related tests.