Bleeding gums in women may be a sign of periodontal disease or blood system diseases. 1. Periodontal diseases: Chronic gingivitis (especially gingivitis during puberty or pregnancy) is most common in women during puberty or pregnancy; its main cause is the change of hormone levels, which will lead to the gum tissues being easily infected by bacteria and their secretion of inflammatory substances, which will lead to red, swollen and bleeding gums. 2. Blood system diseases: leukemia, hemophilia, etc. can lead to abnormal coagulation function of the body, which can easily lead to bleeding of the skin or mucous membranes (e.g., gum tissues); and the amount of bleeding is relatively large, and conventional treatments can not be effective in stopping bleeding. It is recommended to consult a doctor for symptomatic treatment, such as periodontal treatment or hematology specialist treatment to avoid delaying the condition.