The main reasons for the pain in the calf bones after pregnancy are: 1, no timely calcium supplement after pregnancy, because the baby’s bone development needs more calcium, this situation makes the bone calcium in the mother’s bones are mobilized to meet the needs of the baby’s growth and development, because of the lack of calcium in the mother’s bones lead to osteoporosis and cause pain in the calf bones. 2, no timely iron supplement after pregnancy, pregnant women have a More serious iron deficiency anemia, this situation will also appear bone pain symptoms, this pain symptoms mainly occur in the long bone parts. When this symptom occurs, pregnant women should go to the hospital in time, bone density tests, blood tests, etc., to clarify the specific causes of timely treatment.