It is very common for 2 year old babies to fall on their heads. Parents need to check carefully if there is any obvious depression or bulge in the head where the injury occurred, if there is an obvious bulge, consider that the trauma has caused local capillary rupture and bleeding to form a scalp hematoma, and need to go to the hospital as soon as possible to do a cranial CT examination to clarify whether there is intracranial bleeding or skull fracture. If the general condition is good without nausea, vomiting, coma, drowsiness, you can first not do special treatment, close observation at home and more bed rest, you can also local cold compress, use ice or cool towels to promote local hemostasis, after 48 hours can be hot compress to promote the dissipation of bruises. If there is always repeated vomiting, coma, confusion and mental discomfort, it is necessary to go to the hospital at any time within 72 hours after the injury for cranial CT examination to clarify the presence of intracranial lesions and hospitalization if necessary.