High red blood cells in the stool are generally divided into two cases: 1, gastrointestinal bleeding, this condition is not combined with leukocytosis in the stool, simple red blood cells are more stool occult blood positive. The color of the stool may vary clinically depending on the amount of bleeding. For example, when the amount of bleeding is relatively small, there may be no change in the color of the stool, but the occult blood test is abnormal. If the amount of bleeding is more than 50 mL, the stool may be black, or it may turn dark red if it is more. Of course, it should be combined with other clinical manifestations to determine whether it is upper or lower gastrointestinal bleeding. 2, high red blood cells in the stool combined with an increase in the number of white blood cells, clinically most often seen in the intestinal tract infection, like the often said bacterial dysentery. There is also a relatively rare clinical, but in recent years the incidence in China is also on the rise, such as ulcerative colitis, Crohn’s disease, this part of the stool test has red blood cells, white blood cells, in the case of co-infection white blood cells can increase more significantly. I hope that when you have this condition, you should go to the hospital for more laboratory tests. If there are any abnormalities, you should go to the gastroenterology clinic and have the relevant tests done, and if necessary, you need to go for colonoscopy.