Hidden pain at the tear after delivery may be caused by the wound not fully recovered, or it may be caused by local infection and other causes. 1. The wound is not fully recovered: after the tearing of normal delivery will lead to local rupture, bleeding, pain, postpartum due to the wound is not fully recovered, can cause hidden pain at the tear, usually lasts for 4 to 5 days will be improved. 2. Localized infection of the wound: If the wound at the tear is locally infected, it can cause local redness, swelling and pain, which may be accompanied by bleeding, itching and other symptoms, and can also cause vague pain at the tear after delivery. There are many other causes of postpartum tearing pain, which should be taken seriously, and timely consultation should be made to identify the cause of the disease, and further treatment or treatment in accordance with medical advice.