Patients who feel their heart beat faster after pregnancy mainly consider the following five reasons: First, patients can experience temporary discomfort due to increased circulating blood volume after pregnancy, this situation is generally not a problem when doing ECG and other related tests, patients can recover on their own and no special treatment is needed. Second, abnormal thyroid function, such as hyperthyroidism, patients need to check the thyroid function to determine. Third, abnormal blood sugar, mainly considering hyperglycemia or hypoglycemia, patients need to do a glucose tolerance test to determine. Fourth, cardiovascular disease, many patients with mild cardiovascular disease, before the pregnancy can have no clinical symptoms, after pregnancy can be induced, the need for screening related to heart disease. Fifth, anemia, before pregnancy, mild anemia can have no clinical symptoms, but after pregnancy, anemia can cause symptoms such as rapid heartbeat and dizziness, which can be judged by checking blood count.