Dizziness and lack of energy during lactation are mainly seen for the following reasons: First, the nutritional intake of lactating women will increase as the nutritional demand of the baby increases, and if there is insufficient nutritional intake at this time, anemia will easily occur and the patient will experience dizziness and lack of energy all over the body, especially when moving around. Secondly, if dizziness and lack of energy appear during lactation, ask the patient how he or she sleeps at night and whether there is any lack of sleep or depressed mood or lack of interest. Because of endocrine reasons during lactation, many patients may suffer from postpartum depression, which is manifested as dizziness and general lack of energy, and can be assessed by anxiety and depression scale to find out whether there is postpartum depression. Therefore, the main reasons for dizziness and lack of energy during breastfeeding are the above two aspects.