Persistent menstruation requires first of all a hospital visit to check the blood HCG level to rule out pregnancy as the cause. For cases where pregnancy is ruled out as the cause, if endometrial polyps and endometrial thickening are found, hysteroscopy plus diagnostic curettage will be required. Post-operative pathology will be sent to determine the next step of treatment based on the post-operative pathology. If no abnormality is found in the ultrasound, progesterone can also be used for treatment, such as progesterone injection 20mg once daily by intramuscular injection for three days, and then stop the drug to observe menstruation. However, before using progesterone, it is necessary to check the blood routine to make sure there is no anemia, and only if there is no anemia can progesterone be used for treatment. After progesterone, there will be a normal menstrual flow. If the menstruation clears within ten days, no subsequent curettage is necessary. If there is still bleeding after more than ten days, further curettage is required.