Whether the mammary gland injured by the baby kicked during breastfeeding will be healed by itself, the specific situation should be analyzed in conjunction with the degree of injury and the patient’s discomfort symptoms. If the pain and other uncomfortable symptoms are relieved soon after the injury, there is no local swelling, pain, subcutaneous bruising, and the local pain is not obvious, it is recommended that during the observation period, normal breastfeeding is also needed to avoid stopping breastfeeding, which may cause milk stagnation. This kind of situation generally does not affect the patient too much, pay attention to protect the breast, appropriate rest may be self-healing. If the patient has subcutaneous bruising or localized obvious swelling and pain, consider that there is a serious soft tissue injury, there can be a rupture of the milk ducts, usually accompanied by redness, swelling of the breast, pain, skin temperature, etc. After the injury, it is recommended that the patient immediately apply a cold compress locally, and seek medical examination as early as possible. Therefore, if the patient has breast redness, swelling, pain and other symptoms, and a longer period of time can not be relieved, it is recommended to consult a doctor in a timely manner.