Functional uterine bleeding should be treated according to the patient's age. If functional uterine bleeding occurs during adolescence, menstrual regulation treatment is needed. If it occurs during the reproductive age, it requires menstrual regulation and hemostasis, along with treatment to promote ovulation. If functional uterine bleeding occurs during menopause, it is mainly due to a lack of progesterone, and treatment with progesterone can be applied at this time. If there is endometrial thickening, dilation and curettage may be necessary, and the treatment plan should be determined based on the pathological results after the procedure.