Weakly positive fecal occult blood is associated with the possibility of bowel cancer, but further investigations are required to determine this. There are various reasons for the occurrence of weak positive fecal occult blood, which can be categorized into physiological and pathological reasons. 1. Physiological: patients who have consumed animal blood products and meat before the examination will have fecal occult blood, which requires a second examination after consuming such food. 2.Pathology: (1) Digestive tumor: it is possible that intestinal cancer leads to mucosal damage and weak positive fecal occult blood, though patients need to undergo further examination, such as tumor marker examination, barium meal X-ray examination, etc. (2) Gastrointestinal bleeding: such as peptic ulcer patients, intestinal mucous membrane damage, fecal occult blood may also occur. (3) hemorrhoids: some patients with hemorrhoids bleeding in small amounts, mixed into the feces, may also trigger a weak positive fecal occult blood. Weakly positive fecal occult blood test result alone cannot accurately determine whether it is intestinal cancer or not, but also needs to be combined with the characteristics of medical history and other test results to make accurate judgment. Weak positive fecal occult blood can also be seen in other reasons. It is recommended to consult a doctor in time and standardize the treatment under the guidance of a professional doctor in order to avoid delaying the condition.