The harm of iron deficiency anemia in women is related to the severity of the anemia. Mild anemia generally has no obvious clinical symptoms; moderate anemia often presents with fatigue, palpitations and shortness of breath after activity, dizziness, tinnitus, insomnia, frequent dreams, reduced appetite, and poor digestive function; severe anemia can affect the quality of life, with symptoms of palpitations and shortness of breath even with slight activity, and can severely impact the quality of life. The most common cause of iron deficiency anemia in women is due to increased menstrual flow. Additional examinations, such as gynecological ultrasound, are necessary to clarify the presence of conditions like uterine fibroids or adenomyosis, and to provide targeted treatment.