The bag on the head due to a fall: first, to see how the bag is in the end, there is no local skin wound, the size of the bag, whether the bag is hard or has a sense of fluctuation. Secondly, if the bag is not very large, it is soft and there is no obvious wound. In this case, you can use a cold towel or ice pack nearby, about 15-20 minutes to prevent the bag continues to grow, 2-3 times a day, 2-3 days in a row. After a few days, the bag gradually stabilized, you can no longer need to compress, or use a hot towel hot compress, to promote the receding of the bag. In addition, there are some patients this bag may not disappear for a longer time, need to go to the hospital to check, and sometimes need to do the bag puncture drainage surgery to get better. Finally, it is also necessary to observe the patient’s consciousness after the injury, whether there is nausea, vomiting, headache and other conditions.