The baby’s head bumped a bag to quickly reduce swelling, need to be targeted according to the time, size and other circumstances of the bag to be dealt with. Firstly, if the bump is within 24 hours or if the bag is small, you can first give your baby a local pressure wrap with gauze or bandages or use a towel wrapped in an ice pack or ice water bag for external application at home, which will promote vasoconstriction and avoid continued bleeding of the subcutaneous blood vessels. Secondly, if the bump has been more than 24 hours, you can apply appropriate hot compresses to promote the hematoma to subside and absorb. If the baby’s bag is not broken, you can also use some safflower oil for local massage, which can also promote the hematoma to subside. Finally, if there is a larger bag or if there is a hematoma that is not easily absorbed, you can go to the hospital for local disinfection, repeated extraction of fluid and other symptomatic treatment, which can also quickly reduce the swelling. Usually, if a baby’s external hematoma is not very serious, it will subside on its own in most cases, so parents should not worry too much. It should be noted that during the recovery period, parents should pay high attention to whether the baby has symptoms such as change of mood, loss of consciousness or mental irritability, headache, nausea, vomiting, etc. There are also some babies who do not express themselves and show obvious symptoms such as crying or drowsiness, at this time, they need to be sent to the hospital immediately for prompt imaging examinations such as CT or MRI of the head to see if there is intracranial hematoma, injury or concussion. Once found, treatment should be carried out immediately after diagnosis to avoid delaying the condition.