Dizziness caused by heavy menstrual flow is mainly considered as a symptom arising from secondary anemia. For this, the cause of heavy menstrual flow should be found and timely symptomatic treatment should be carried out to improve the patient’s anemia. The following diseases are mainly considered for heavy menstrual flow: a. Uterine fibroids: find out if the patient has uterine fibroids, which include interstitial fibroids and submucosal fibroids, which are more likely to cause increased menstrual flow. Second, the uterine cavity occupancy: whether there is occupancy of the uterine cavity, including the possibility of multiple endometrial polyps, to exclude polyps have no abnormal lesions. Third, dysfunctional uterine bleeding: for women in their reproductive years, dysfunctional uterine bleeding may occur. Generally, mainly consider these reasons. When patients have heavy menstrual flow, they should go to the hospital for ultrasound, gynecological examination, etc. If they have anemia symptoms, they should check the blood routine in time, and actively treat gynecological diseases while correcting anemia to relieve these symptoms.