The presence of blood flow signals in ovarian cysts does not mean that the condition is necessarily serious, because ovarian cysts are peritoneal and contain fluid masses, which are usually benign in majority. If an ovarian cyst has a blood flow signal, it means that the ovarian cyst is supplied with blood and the growth rate is relatively fast. A fast-growing mass has a greater impact on the body. Ovarian cysts with hemorrhagic signals should be given high priority and should be actively examined and treated. Although ovarian cysts with hemorrhagic signals do not necessarily mean that the condition is serious, early diagnosis and treatment is very important. If ovarian cysts with hemorrhagic signals are less than 5 cm in diameter and there are no symptoms such as weakness, abdominal pain or dizziness, they can be temporarily observed. If the cyst is larger than 5 cm in diameter or although it is smaller than 5 cm, but accompanied by obvious symptoms such as weakness, abdominal pain and dizziness, the condition is considered to be more serious. Ovarian cysts should be found in time to seek medical attention to avoid delaying the condition.