Fecal occult blood three plus sign suggests that the digestive tract may have bleeding, fecal leukocytes two plus sign suggests that the intestinal tract has an infection, both of which need to be further examined to clarify the cause. 1. fecal occult blood three plus consider digestive bleeding is relatively large, it is recommended that timely perfect gastroenteroscopy, clear cause of bleeding. 2. Two plus sign of fecal leukocytes consider intestinal infection, need to ask the patient whether there are accompanying symptoms, such as abdominal pain, diarrhea, etc., and recommend perfect colonoscopy to clarify the cause of the disease. Stool examination is generally not affected by diet and drinking water, menstruating women are recommended to test after the end of menstruation. If there are any gastrointestinal symptoms such as black stools, abdominal pain, diarrhea, etc., it is recommended to go to the hospital in time to avoid delaying the condition.