Functional uterine bleeding is a common disease in women. The main cause of functional uterine bleeding is due to hormonal imbalances in the body, leading to irregular vaginal bleeding. This condition is divided into several different categories, each of which involves different types of endocrine disorders. Therefore, when a woman experiences functional uterine bleeding, it is advisable to visit a local hospital for gynecological color ultrasound and sex hormone tests, among others, to assess the state of the female reproductive and endocrine systems and to formulate the next steps in the treatment plan based on different results.