The main reasons for calf bone pain after pregnancy are: 1, not timely supplementation of calcium after pregnancy, because the baby’s bone development needs more calcium, this situation makes the maternal bone bone calcium is mobilized, first to meet the needs of the baby’s growth and development, because the maternal bone calcium deficiency leads to osteoporosis and cause calf bone pain. 2, not timely supplementation of iron after pregnancy, pregnant women appear The more serious iron deficiency anemia, in this case will also appear bone pain symptoms, this pain symptoms mainly occur in the long bone parts. When this symptom occurs, the pregnant woman should go to the hospital in time to conduct bone density tests, blood tests, etc., to clarify the specific causes of timely treatment.